Marty Maraschino In 'Grease' 'Memba Her?!

American actress Dinah Manoff was 21 years old when she rock n' rolled on the movie set of  "Grease" -- playing one of the iconic Pink Ladies, Martina Maraschino AKA "Marty" -- back in 1978.

Dinah shared the big screen with Hollywood legends like John Travolta as the hot and suave leader of the T-Birds, Danny Zuko, Olivia Newton-John as the new and naive girl at school, Sandy and Michael Tucci as Marty's silly, goofy boyfriend and part of the T-Birds.

Other honorable cast mentions include Stockard Channing as Rizzo and Didi Conn as Frenchy.

"You're the One That I Want!"

Guess what she looks like now!

'90s Actress Megan Ward 'Memba Her?!

American actress Megan Ward was in her early 20s when she became a well-known star for her roles in comedy films like "Encino Man," "Freaked" and "The Brady Bunch Movie" back in the early 1990s.

Perhaps one of her most notable roles was Robyn Sweeney in "Encino Man" -- where she played the high school beauty and teen crush of her co-star Sean Astin. She also starred in MTV's first film, "Joes Apartment" alongside Jerry O'Connell, where she played Lily Dougherty -- the senator's daughter.

Over the years, she has made guest appearances on TV shows such as "CSI: NY."

Guess what she looks like now!

Fabrizio in 'Titanic' 'Memba Him?!

American actor Danny Nucci was 28 years old when he was cast as Fabrizio de Rossi -- the Italian native and Jack Dawson's best friend who journeyed on the Titanic ship -- in the 1997 classic romance film "Titanic."

Nucci shared the big screen with some of the greats including Leonardo DiCaprio as the optimistic and poor American seeking to become rich through his journeys, Jack Dawson and Kate Winslet as the rich socialite who is seeking freedom from an arranged life, Rose DeWitt Bukater.

During the 1990s, Danny acted in two other films where he also was killed off: "Eraser" and "The Rock."

Guess what he looks like today at 53 years old!

Penny In 'The Wedding Planner' 'Memba Her?!

American comedian and actress Judy Greer is well known for playing the role of Penny -- the funny yet instrumental wedding planner that ultimately pushes her co-worker to date, fall in love and get married -- in the 2001 film "The Wedding Planner."

Greer shared the big screen with other A-listers Jennifer Lopez as the wedding planner, seeking monogamy and love, Mary Fiore, Matthew McConaughey as a pediatrician, and ultimately Mary's love interest, Dr. Steve Edison and Justin Chambers as Mary's childhood boyfriend and her secondary option for marriage, Massimo.

And, don't forget her iconic role in "13 Going On 30" with Jennifer Garner!

Guess what she looks like today 21 years later!

Dragon Lady In 'Rush Hour 3' 'Memba Her?!

Japanese actress and singer Youki Kudoh was 36 years old when she was cast as the 'dragon lady' aka Jasmine -- the main antagonist and assassin with many superpowers like convincing, manipulating and seducing Lee before attempting to murder him -- in the 2007 action/comedy film "Rush Hour 3."

Youki shared the big screen with no other than Jackie Chan as Lee, Chris Tucker as Carter, Hiroyuki Sanada as Kenji and Noémie Lenoir as Genevieve.

"Would you like to know a secret cop? Someone's going to die here tonight."

Guess what she looks like now in her early 50's!

Chester Greenburg In "Dude, Where's My Car?" 'Memba Him?!

Minnesota-native Seann William Scott was only 23 years old when he landed the role of the 4/20 friendly Chester -- one of two best friends who set off on an epic adventure to find their car after a wild night of partying -- in the 2000 stoner masterpiece "Dude, Where's My Car?"

Scott was cast alongside Ashton Kutcher as Chester's pothead BFF, Jesse ... and Jennifer Garner and Marla Sokoloff as the twins girlfriends, Wanda and Wilma.

And if your struggling from some smoke-induced memory loss ... Seann William Scott is also known for his legendary character Steve Stifler in the 'American Pie' films.

Duuuude, Sweeeeeet!

Guess what he looks like now at 45 years old!