Star transformations: From squeaky clean to super sexy

Christina Aguilera The songstress may have come on the scene as a fresh-faced and bright-eyed teen who had made a name for herself as a Disney "Mousketeer," but it wasn't long before she was singing about getting "Dirty." Click through to see her transformation and which other gals changed their images once they made it big. (AP)

Christina Aguilera The pop singer has gone through many phases and reinvented herself several times throughout her short career. A few sexy highlights? She wore chaps in her video for "Dirrty," made-out with Madonna at the MTV Video Music Awards in 2003 and starred as a Burlesque dancer in the video for "Lady Marmalade." (Reuters)

Miley Cyrus The young "Hannah Montana" star seemed like such a daddy's girl when she first started out and would walk red carpets with her famous dad Billy Ray Cyrus. (Reuters)

Miley Cyrus Can you believe she's only 19? It seems like Miley has been trying to prove to the world that she's an adult in recent years. From prancing around half naked most of the time to performing on stripper poles, Miley really wants you to know she has grown up. (Reuters)

Victoria Beckham An innocent Posh Spice attracted the attention of soccer star David Beckham in 1997 and has since transformed right before our eyes. (Reuters)

Victoria Beckham Posh is a fashion icon now and looking sexier than ever, even four kids later! (Reuters)

Britney Spears The young singer was a proper southern girl when she started singing about crushes that she probably didn't know much about. (Reuters)

Britney Spears Within a few years Brit shed her innocent image along with her clothes. (Reuters)

Jessica Biel A teen-aged Biel was the biggest breakout star of WB's "7th Heaven." (Reuters)

Jessica Biel In a move that clearly erased her "pastor's daughter" image from "7th Heaven," Jess shed her top for Gear Magazine in 2000. (Reuters)

Selena Gomez The Disney star has been famous since she was a pre-teen, so it's no wonder she was fresh-faced and adorable on "Wizards of Waverly Place" For more pics of Selena, go to <a target="_blank" href="http://www.x17online.com">x17online.com.</a>

Selena Gomez Although she's only 19, Selena has long shed her Disney girl image. (AP) (2012 Invision)