Olsen Twins

Mary-Kate and Ashley Olsen (seen here in 1998) won over our hearts as the youngest sister, Michelle Tanner, on Full House. They ended up growing a franchise filled with movies, a clothing line, make-up line, dolls and more. (credit: Brenda Chase/Getty Images)

Olsen Twins

Here are the twins in New York in 2011. (credit: Stephen Lovekin /Getty Images)

Neil Patrick Harris

Ok, so he's adorable, but would you really want him as your doctor? Here's Neil Patrick Harris in a still from his hit 90s show "Doogie Howserm M.D." (credit: IMDB)

Neil Patrick Harris

Here's the Neil Patrick Harris that we all know and love in 2011. He went on to star in one of the best roles in the stoner flicks "Harold and Kumar" and is currently on the hit CBS sitcom "How I Met Your Mother."

Lindsay Lohan

Before she was a "Mean Girl" and frequenting courtrooms on various charges, Lindsay Lohan portrayed adorable twins in the remake of "The Parent Trap" in 1998. (credit: George De Sota/Getty Images)

Lindsay Lohan

Here is Lindsay Lohn in New York City in 2011. (credit: Stephen Lovekin/Getty Images)

Jodie Sweetin

Jodie Sweetin (bottom right) played the cute middle child in the hit 90s feel-good television show "Full House. (credit: IMDB)

Jodie Sweetin

After "Full House," Sweetin struggled with drug and alcohol abuse. She wrote about her downward spiral in a memoir called "UnSweetined." Here she is in 2011. (credit: Frazer Harrison/Getty Images)

Emma Watson, Rupert Grint and Daniel Radcliffe

Remember when Harry Potter first blew onto the scene? In case you don't, this is what Harry Potter, Hermione Granger and Ron Weasley (aka Daniel Radcliffe, Emma Watson and Rupert Grint ) looked like in 2000.(credit: Dave Hogan/Getty Images)

Emma Watson, Rupert Grint and Daniel Radcliffe

Here are the Potter kids in 2010. (credit: Gareth Cattermole/Getty Images)

Haley Joel Osment

He gave us the chills when he confessed to Bruce Willis, "I see dead people" in the 1999 movie "The Sixth Sense. (credit: Brenda Chase/Getty Images)

Haley Joel Osment

Here he is in 2010. (credit: Justin Hession/Getty Images for Shooting Stars))

Dakota Fanning

We first fell in love with Dakota Fanning in 2001 in her big screen debut in "I Am Sam." She became everyone's favorite movie kid for the rest of the decade. (credit: Vince Bucci/Getty Images)

Dakota Fanning

(credit: Stephen Lovekin/Getty Images)

Candace Cameron

Candace Cameron, top middle, played the oldest sister, D.J. Tanner, in the show "Full House." (credit: IMDB)

Candace Cameron

After Full House, Cameron appeared in a few television movies and sitcoms. She now has a role in the ABC show Make It Or Break It. Here she is in 2011. (credit: Jason Merritt/Getty Images)