Singer Robyn 'Memba Her?!

Swedish pop singer Robin Miriam Carlsson -- known professionally as Robyn -- was 31 years old when she dropped her popular album "Body Talk" back in 2010 -- with hit songs like "Dancing On My Own" (which has over 300 million listens on Spotify) and "Call Your Girlfriend."

In 1997, Robyn made big waves to the United States after her dance-pop singles "Do You Know (What It Takes)" and "Show Me Love" both hit the top 10 on the Billboard Hot 100.

Most recently, Charli XCX announced to her Twitter followers her and Robyn have been making music together!

"I'm in the corner, watching you kiss her, oh!"

Guess what she looks like now!

Geena In 'Unfabulous' 'Memba Her?!

American actress and singer Malese Jow was just 13 years old when she first started playing Geena Fabiano -- the 13-year-old fashionista who designs her own clothes and wears them to Rocky Road Middle School -- in Nickelodeon's sitcom "Unfabulous" back in 2004.

Jow shared the set with Emma Roberts as the middle-schooler who writes songs about boys and school, Addie Singer, Tadhg Kelly as Addie's older brother who works at a smoothie bar, Ben Singer and Jordan Calloway as the environmentalist and basketball player, Zack Carter-Schwartz.

Malese also portrayed Lucy Stone in Nickelodeon's "Big Time Rush."

Guess what she looks like now!

'Let It Rock' Singer Kevin Rudolf 'Memba Him?!

New York native and singer Kevin Rudolf was 25 years old when his song "Let It Rock" featuring Lil Wayne became an international banger -- reaching number 5 on the Billboard Hot 100 and number 2 on the Canadian Hot 100 -- back in 2008.

In addition to his vocal skills, Rudolf is also a songwriter and plays several instruments. In 2003, he strung his guitar on Lil Kim's hit song "The Jumpoff," which led to other collaborations including Timbaland, Justin Timberlake and The Black Eyed Peas.

"Because when I arrive I, I bring the fire ... Let It Rock, Let It Rock, Let It Rock!"

Guess what he looks like now at 40 years old!

Stacy London On 'What Not To Wear' 'Memba Her?!

TV personality and stylist Stacy London was in her mid 30's when she first appeared as the fashion consultant on TLC's "What Not To Wear" -- a makeover reality show highlighting contestants' (who were nominated by friends, family and coworkers) style transformations -- back in 2003.

London shared the makeover duties with Clinton Kelly as the lifestyle consultant (who you may also recognize from the talk show "The Chew) and famous hairstylists Nick Arrojo and Ted Gibson who've worked with big celebs like Anne Hathaway, Zoe Saldana and Ashley Greene.

Guess what she looks like now at 54 years old!

Danny In 'Zathura' 'Memba Him?!

American actor Jonah Bobo was only 8 years old when he played the role of Danny -- the 6-year-old boy who found confidence through the board game, Zathura -- in the "Jumanji" spin-off and science-fiction adventure film, "Zathura: A Space Adventure" back in 2005.

Jonah shared the outer space adventure with Josh Hutcherson as Danny's bossy but loving older brother, Walter, Kristen Stewart as the teenage sister who was supposed to be in charge while their dad was at work, Lisa and Dax Shepard as the outer space savior who protected the kids from the aliens, Astronaut.

Guess what he looks like now!

Marcus On 'Sex And The City' 'Memba Him?!

American actor, singer, and dancer Sean Palmer was 29 years old when he first started playing the role of Marcus -- the Broadway hopeful and Stanford Blatch's boyfriend -- in HBO's hit show "Sex And The City" back in 2002.

During his 2 year run on 'SATC,' Palmer was part of an iconic cast including Sarah Jessica Parker as the sex newspaper columnist, Carrie, Cynthia Nixon as the rigid and funny attorney, Miranda, Kim Cattrall as the sex-positive public relations specialist, Samantha, Kristin Davis as the conservative art gallerist and the late Willie Garson as Carrie's bestie and Marcus' love interest.

Guess what he looks like now!

Singer Natalie La Rose 'Memba Her?!

Dutch singer Natalie La Rose was 27 years old when her name held a peak position on the music charts -- hitting the top 10 on the US Billboard Hot 100 -- with her hit song "Somebody" featuring Jeremih back in 2015.

In 2013, Natalie signed with American Rapper Flo Rida and Republic Records. She's collab'd with some of the music industry's hottest stars including Fifth Harmony, Bea Miller and Fetty Wapp.

"I wanna rock with somebody, I wanna take shots with somebody, shot, shot, shot, shot!"

Guess what she looks like now at 35 years old!

Greg In 'Everybody Hates Chris' 'Memba Him?!

American actor Vincent Martella was only 12 years old when he first started playing the role of Greg Wuliger -- the easygoing painter and Chris' only friend -- on the CW's sitcom "Everybody Hates Chris" back in 2005.

Vincent shared the screen with Tyler James Williams as the unpopular, young teen who wants to be liked by his peers, Chris, Imani Hakim as the annoying little sister, Tonya and Tequan Richmond as Chris's younger and much taller brother, Drew.

Terry Crews also played a role in "Everybody Hates Chris," and Chris Rock was both a producer and narrator for the comedic show!

Guess what he looks like now!

Clark Kent In 'Smallville' 'Memba Him?!

American actor Tom Welling was 24 years old when he first landed the starring role as Clark Kent -- Earth's greatest superhero with studly glasses -- in the Adventure show "Smallville" starting in 2001 and coming to an end in 2011.

Welling shared the superhero series with Michael Rosenbaum as the billionaire CEO, Lex Luthor, and Kristin Kreuk as Kent's love interest who faked her death, Lana Lang.

You may recall Tom's other notable roles such as Marcus Pierce/Cain on Fox's "Lucifer" with Tom Ellis and as Charlie Baker in “Cheaper by the Dozen” and its sequel “Cheaper by the Dozen 2” with Steve Martin.

Guess what he looks like now!

Autumn Reeser 'Memba Her?!

American actress Autumn Reeser popped off when she was in her mid-20s -- landing roles on hit TV shows like Fox's "The O.C.", where she played the attention-seeker Taylor Townsend, and the junior agent Lizzie Grant on HBO's "Entourage" -- back in the early/mid 2000s.

Some of her notable movies include playing Jane in "The Girl Next Door" starring Elisha Cuthbert back in 2004, "So Undercover" with Miley Cyrus back in 2012, and in 2016 she played Elizabeth in "Sully" alongside Tom Hanks.

To date, Autumn has acted in 13 Hallmark Channel television films.

Guess what she looks like now!

Jason Patric 'Memba Him?!

NYC native and American actor Jason Patric was in his early 20s when he became known for his movie characters, such as playing Michael Emerson -- the handsome and laid-back guy -- in "The Lost Boys" back in 1987 and Jim Raynor -- the undercover narcotics officer -- in "Rush" back in 1991.

Some of his other early notable parts include "Sleepers" with Kevin Bacon and Brad Pitt and "Speed 2: Cruise Control" with Sandra Bullock.

During the mid 2000s, Patric veered from the movie screen to the Broadway stage ... appearing in shows like "Cat On A Hot Tin Roof" and "That Champion Season."

Guess what he looks like now!

Meadow Soprano On 'The Sopranos' 'Memba Her?!

American actress Jamie-Lynn Sigler was 18 years old when she first played the role of Meadow Soprano -- the stubborn and entitled daughter who graduates from Catholic School and heads to Columbia University -- in HBO's "The Sopranos" from 1999-2007.

Sigler was part of an ensemble cast including the late James Gandolfini as the temperamental Italian-American mobster and father who winds up fooling around on his wife, Tony Soprano, Edie Falco as Tony's wife who is witty and committed to her family, Carmela Soprano and Lorraine Bracco as Tony's notable and wealthy therapist, Jenifer Melfi.

Guess what she looks like now at 42 years old!

Hot Chelle Rae 'Memba Them?!

American pop rock rock band Hot Chelle Rae emerged on the music scene back in 2005 and has continued to captivate their fans to this day. Their 2011 hit songs, "I Like It Like That" and "Tonight Tonight" put the stamp on their success and fame.

Formerly known as Miracle Drug, the band originally consisted of members Ryan Follesé, Nash Overstreet, Jamie Follesé and Ian Keaggy (who parted ways in 2013). The band said their goodbyes in 2014 but reunited in 2018, and they've been performing ever since!

Hot Chelle Rae has toured with big music stars like Taylor Swift and Demi Lovato.

"Tonight tonight, there's a party on the rooftop top of the world!"

Guess what they look like now!

Cookie On 'Ned's Declassified' 'Memba Him?!

American actor and comedian Daniel Curtis Lee was just 12 years old when he was first cast as Simon Nelson-Cook  ... aka "Cookie" -- the techie middle schooler and Ned's best friend on Nickelodeon's comedy series "Ned's Declassified School Survival Guide" -- back in 2004.

Daniel shared the spotlight with Devon Werkheiser as the smart kid who gets into some mischief with his friends, Ned, and Lindsey Shaw as Ned and Cookie's level-headed friend who excels in sports.

Actor Austin Butler was also part of the cast, playing the background role of Zippy for two seasons.

Guess what he looks like now!

Zero Wolf In 'Apocalypto' 'Memba Him?!

American-Canadian actor and dancer Raoul Trujillo was 51 years old when he took on the role of Zero Wolf -- the cold-hearted Mayan leader who plunders Jaguar Paw's village and sells them as human sacrifices -- in Mel Gibson's one-of-a-kind adventure film "Apocalypto" back in 2006.

Joining Trujillo in the action-packed film included Rudy Youngblood who putting his life on the line for his fellow villagers and family, Jaguar Paw, Dalia Hernández as the pregnant wife of Jaguar Paw, Seven and Jonathan Brewer who wanted nothing more than to have a family, Blunted.

Raoul was also in the sci-fi/action film "Cowboys & Aliens" alongside Daniel Craig and Harrison Ford.

Guess what he looks like now!

Rowley In 'Diary Of A Wimpy Kid' 'Memba Him?!

American actor Robert Capron was just 12 years old when he first started playing the role of Rowley -- Greg's charming best friend and immature middle school student -- in the family comedy film "Diary of a Wimpy Kid" back in 2010.

Capron was part of an ensemble which included Zachary Gordon as the shy kid who tends to stretch the truth, Greg, Devon Bostick as the intense and at times aggressive drummer, Rodrick and Rachael Harris as the supportive and loving mom who embarrasses the kids, Susan.

Robert portrayed his role in 3 of the series' films.

Guess what he looks like now!