Crop tops, bangs and boy bands are as popular in 2013 as they were in 1993, proving that the '90s is the one decade that never really left. Whether it's catching reruns of "Beverly Hills, 90210," buzzing about a "Jurassic Park" movie or eagerly awaiting an 'N Sync reunion, everything old is new again. In homage to the Lollapalooza festival, which started in 1991 and is still going strong, we present our own '90s nostalgia-palooza: 
Although "Saved By the Bell" got its start in 1989, the half-hour comedy helped define a generation and is still popular in syndication. We don't care how many kids Mark-Paul Gosselaar has or how many hosting gigs Mario Lopez picks up, they're both eternally Zack and Slater to us. (Same goes for you, Elizabeth "I'm so excited!" Berkley.) 
MC Hammer's hammer pants had a starring role in the music video for 1990's "U Can't Touch This," and, surprisingly, are still around. Just ask Justin Bieber. 
Like Hammer, the flower-infested clothing Mayim Bialik's "Blossom" wore is once again in vogue. (We still can't defend her headgear though -- we know you remember those hats.) 
Before Disney and Nickelodeon churned out child stars like the '90s churned out grunge bands, Macaulay Culkin stood in a kid star class of his own. If he hasn't yet trademarked his patented cheek-slap-and-scream move, he should. 
True, "Seinfeld" also technically launched in 1989 -- but what are the '90s without Jerry Seinfeld (left), George Costanza (played by Jason Alexander, right), Kramer and "The Elaine"? 
"The Fresh Prince of Bel-Air" nostalgia transcends its 1990-1996 run both on TV and online. Since most of us can recite the lyrics to the classic theme song without blinking an eye, soon Internet pranksters were busy "Bel-Airing" innocent readers in comment sections instead of "rickrolling." 
In 1991, Tim Allen was introduced to broadcast TV viewers as Tim "The Tool Man" Taylor, a handy family man with three boys. The middle son, played by Jonathan Taylor Thomas, would become a swoon-worthy favorite. And then there was the odd neighbor named Wilson who peered over the fence. 
Nirvana's celebrating the 20th anniversary of "In Utero" this year, but that album's predecessor (and its album cover) "Nevermind" stands the test of time. The kid on the cover, by the way, is now in his 20s -- and he still gets introduced as "The Nirvana Baby." 
Before becoming an Oscar-nominated actor, Mark Wahlberg was preoccupied with showing America his underwear as often as possible. Wahlberg would probably like to forget the "Marky Mark" '90s, but that image is etched into our memories forever. 
Before actresses and reality TV personalities became magazine cover stars, supermodels such as Cindy Crawford ran the show. Long before Britney Spears or Beyoncé landed lucrative endorsement deals with Pepsi, Crawford filmed the still iconic commercial in 1991. 
The boys -- and now men -- of New Kids on the Block have been "Hangin' Tough" for years. The recently revived NKOTB can still make fans weak out on tour, which lately includes fellow '90s stars 98 Degrees and Boyz II Men. 
Jaleel White has worked very hard to leave Steve Urkel in the '90s, but a character that great just can't die. Although "Family Matters," too, actually started in 1989, White's masterful portrayal is easily one of the most memorable roles of the decade that followed. 
Whitney Houston's 1992 movie "The Bodyguard" proved she was more than just a singer, but her smash "I Will Always Love You" proved why she's one of the best. She covered Dolly Parton's song so well that amateur performers still can't help but sing along. 
The ladies of TLC -- that would be Chili, Left-Eye and T-Boz -- made their industry-changing entrance in 1992 with "Ooooooohhh ... on the TLC Tip." Between their frank approach to sex ("Ain't 2 Proud 2 Beg"), smart writing ("What About Your Friends") and distinctive style (yep, the condoms), it makes sense that they were hailed as "a perfect pop group for the times." Still true, by the way. 
Steven Spielberg's 1993 film "Jurassic Park" was such a classic, it even performed well 20 years later. When the 3-D version of the original was re-released in theaters in April 2013, it earned $18.6 million opening weekend. Let's run that past you again: $18.6 million, from a movie many moviegoers likely already own. 
This year, Lenny Kravitz is celebrating the 20th anniversary of his cornerstone album, "Are You Gonna Go My Way." Originally released in March 1993, a remastered and expanded version is now available. 
Few couples typify the '90s like Kurt Cobain and Courtney Love. With Cobain being the pied piper of Seattle grunge and Love the rebellious other half, the two -- along with their daughter, Frances Bean -- were rock royalty in 1993. 
Mariah Carey's incredible range was showcased for the first time in 1990, and by 1993, the singer had earned a reputation as the newest diva to watch. Know what else is incredible? Carey's staying power: The star notched another hit this summer with "#Beautiful." 
There are so many things about "Sleepless in Seattle" that make us wistful: A) Nora Ephron co-wrote and directed it (may she R.I.P.); B) Meg Ryan and Tom Hanks were the '90s on-screen power couple; and C) the thought of someone finding love through a radio talk show and then flying to meet them is beyond quaint. 
Ben Savage (center) has done little else with his acting career outside of '90s family sitcom "Boy Meets World," but he doesn't have to. The comedy, which also starred Danielle Fishel (left), Rider Strong (right) and William Daniels, is so beloved the residuals will probably pay for his retirement. But instead of resting on his laurels, Savage is helping introduce Cory Matthews to a new generation: Disney's spinoff "Girl Meets World," also starring Fishel, will premiere in 2014. 
You might think the "Mighty Morphin Power Rangers" were too cheesy to keep up with today's superheroes, but the franchise is actually still kicking. Twenty years after "Power Rangers" first premiered, Nickelodeon just debuted new episodes of "Power Rangers Megaforce." 
The dictionary might as well use a photo of "Reality Bites" as the definition for the '90s. The 1994 film, directed by Ben Stiller, had it all: Winona Ryder (right), Ethan Hawke (left), Janeane Garofalo and lots of angsty discussion about the meaning of life. For some reason, Stiller wants to bring the movie back as a TV series. 
"ER" was must-see TV for many, and while George Clooney (left) is now an actor and director extraordinaire, we loved him as the womanizing Dr. Doug Ross on that series. 
Before "American Horror Story," it was "The X-Files" that provided our weekly creepy quotient. You shouldn't hold your breath that we'll ever get a third film, but on the bright side, both David Duchovny and Gillian Anderson are open to reprising their roles of Agents Mulder and Scully. 
Kelsey Grammer's Frasier Crane was such a popular character in the '90s, he thinks it even landed him a wife. When it comes to his ex Camille, Grammer has said he thinks she married him not because he was a TV icon but specifically "because I was Frasier." 
Somehow, when "Beavis and Butt-head" returned to MTV in 2011 after 14 years off the air, they were just as immature as they were after first being introduced in 1993. And fans loved it. 
Claire Danes is now picking up Emmys as "Homeland's" Carrie Mathison, whom we bet is the type of person who'd watch "My So-Called Life's" Angela Chase. Quirky, insecure, sensitive and completely relatable, the fact that "My So-Called Life" only lasted a single season is a crime against TV. 
A decade of watching Rachel and Ross make up and break up in between meeting the rest of their "Friends" at Central Perk still wasn't enough for fans. Unfortunately, there are zero plans for a reunion or a movie. 
Jim Carrey first found fame as a member of the ensemble cast "In Living Color," which set him up for a very busy 1994. That year saw Carrey release films like "The Mask," "Ace Ventura: Pet Detective" and "Dumb and Dumber," the latter of which is getting a sequel. "The Mask" helped establish Carrey as a comedic actor who specialized in over-the-top characters. 
Disney's 1994 movie not only had tons of cat lovers naming their pets "Simba," but it also introduced the phrase "hakuna matata" into the American lexicon. The film hasn't lost its popularity in the years since its release and even spurred a successful Broadway musical in 1997. When the studio decided to re-release the animated film in 3-D in 2011, it topped the box office two weeks in a row. Again, we say: that's some serious fandom. 
For a life and career that was all-too-brief, Notorious B.I.G. left a mammoth impact. In 1994, the rapper released his debut, "Ready to Die," and in the process created a legacy that lived on after his death in 1997. 
For some, the '90s are a hazy memory with an Alanis Morissette soundtrack. The Canadian musician released "Jagged Little Pill" in 1995 and became inescapable with hits such as "Ironic," "You Oughta Know" and "Head Over Feet." 
Their 1993 album, "Siamese Dream," helped establish the Smashing Pumpkins on the music scene. But it was their double 1995 album, "Mellon Collie and the Infinite Sadness," that had the biggest splash. The group went on to be one of the biggest of the decade. 
In 1995, multifaceted rapper/actor Tupac Shakur was as well known for his artistry as he was for his fiery personality. His private troubles didn't slow his success, though: As Pac headed for prison in 1995, his album "Me Against the World" was headed for No. 1. Today, in his absence, the slain rapper is celebrated as an icon -- and hologram. 
With Mel Gibson's personal problems swerving into his professional life, we wouldn't be surprised if many of you prefer to remember the 1995 version of the actor -- covered in war paint and yelling, "They may take our lives, but they'll never take our freedom!" 
Rebecca Black has laid claim to the fifth day of the week, but in 1995, "Friday" was the domain of Chris Tucker (left) and Ice Cube. The ever-so-quotable movie, directed by F. Gary Gray, spawned a few follow-ups, but the original is hands-down the best. 
In September 2013, a New Yorker profile revealed that Alicia Silverstone was almost cast as Claire Danes' Angela Chase in "My So-Called Life." But there's an actress for every part, and we're hard-pressed to think of another star who could've embodied Cher Horowitz in the 1995 classic "Clueless" the way Silverstone (right) did. 
Tom Cruise had Renee Zellweger's Dorothy and the entire audience at "hello" in 1996's "Jerry Maguire." Audiences fell in love with Cruise as a sports agent who finds love while trying to find his way. But the big winner was Cuba Gooding Jr., whose performance as Rod "Show Me the Money" Tidwell earned him the best supporting actor Oscar. 
Jamiroquai was popular in the United Kingdom before 1996, fronted by the charismatic singer Jay Kay. Their single "Virtual Insanity" -- and its accompanying music video -- broke the group out into the mainstream in the United States, inspiring style copycats. 
R&B singer Aaliyah quietly sneaked up on the unsuspecting in 1994, when she released her debut album "Age Ain't Nothing but a Number" with the help of her then-mentor, R. Kelly. Controversy came in the form of a marriage license published by Vibe Magazine that purported to show Kelly had wed a then 15-year-old Aaliyah (her age was listed as 18). ABC News reported that the marriage was annulled and with support from producers Missy Elliott and Timbaland, Aaliyah went on to solidify her status as an R&B princess before her death in a plane crash in 2001. Now there is a posthumous Aaliyah album in the works. 
We hope the movie about the making of 1997's "Good Will Hunting" is going to arrive any day now, because Matt Damon's working bromance with Ben Affleck (right) is part of Hollywood history. When the two teamed up to write the screenplay, they memorably took their story all the way to the Oscars. The pair is seen here with Minnie Driver. 
For an anti-social teen, Daria Morgendorffer is still incredibly popular. No one has really made peace with the ending of "Daria" after five seasons in 2001 -- not even the show's network, MTV. They've recently joined the Internet in campaigning for a live-action film based on the animated series about an angsty, dry-witted high school student. 
The three Hanson brothers "MMMBop"ed their way into pop culture and many a young girl's heart. They may be married dads now, but they haven't forgotten how good the '90s were to them -- they crafted a beer named after their biggest hit. 
After crossing over from the United Kingdom to the States and the rest of the world with "Wannabe" in 1996, the Girls spawned two back-to-back best-selling albums, a movie and plenty of hysteria. It's been nearly 20 years since their pop domination, and the group's still got it: At the 2012 Summer Olympics, the five members reunited for a performance at the London games. 
Sarah Michelle Gellar's "Buffy the Vampire Slayer" would be right at home in today's pop culture landscape filled with butt-kicking heroines. There's actually the slightest possibility that the 1997 Joss Whedon series could make a return as a movie: "If there was ever the right story, we would do it," Gellar said this fall. 
We would say that the Backstreet Boys are back, but we're not sure if they ever really left. While the group took a break in the early 2000s, they're now celebrating their 20th anniversary, with a new album to boot. 
Near, far, wherever you are, you probably recognize this epic scene from James Cameron's 1997 film "Titanic." The movie, which gave Leonardo DiCaprio official heartthrob status and Kate Winslet an Oscar nomination, is the second-highest grossing film of all time in the States. It also gave Celine Dion a huge hit in the theme song that you are probably hearing in your head right now. 
In 1998, a quad of then-unknown teens stepped into roles that would come to define their lives. "Dawson's Creek" lasted for six seasons, but its popularity is still strong 10 years after the series finale. Need proof? Star James Van Der Beek's recent role on "Don't Trust the B----" revolved around the fact that he's "Beek from the Creek." Michelle Williams (left), Katie Holmes (third from left) and Joshua Jackson (right) haven't done too badly for themselves either. 
The Backstreet Boys had to battle for boy band domination in the late '90s with the likes of 'N Sync, fronted at the time by a curly-haired Justin Timberlake. (The mystery of those curls has remained unsolved.) Interestingly enough, the tables have now turned: Whereas 'N Sync was killing it in 1998, in 2013 they could barely reunite for more than a minute. 
Marilyn Manson was one of the most controversial figures of the '90s, although the debate over his music didn't boil over until the latter half of the decade. From his "Antichrist Superstar" album to his iconic style, Manson became both the poster child -- and scapegoat -- for disaffected youth. 
Believe it or not, "Sex and the City" first debuted in 1998. And somehow, even with episodes in constant rotation on cable plus two so-so movies, Sarah Jessica Parker (third from left) is still considering giving Carrie Bradshaw another go. Also pictured from left: Cynthia Nixon as Miranda Hobbes, Kim Cattrall as Samantha Jones (second from left) and Kristin Davis as Charlotte York. 
Britney Spears wasted no time putting her Mouseketeer days firmly behind her when she launched a pop career in 1999. The song, "Baby One More Time," was tailor-made for radio, but it was the slightly salacious music video that sold it. Somewhere, there are adults who still remember every dance move. 
Eminem politely introduced himself in 1999's not-so-polite track, "Hi, My Name Is." Between his effortless, rapid-fire flow and his pop culture-savvy music video, Slim Shady didn't need much more of an introduction than that. 
California trio blink-182 was on its fourth album when it hit radio paydirt in 1999. With songs such as "All the Small Things" and "What's My Age Again?," blink-182 became a household name after seven years in the industry. 
Who ran the world before Beyoncé? Destiny's Child. In 1999, Queen Bey (right) was reigning over a girl group with a rotating cast, but hot singles nonetheless. As listeners prepared for the new millennium, they had Destiny's Child in their ears. Also pictured from left: Former members LaTavia Roberson, LeToya Luckett and Kelly Rowland. 
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