18 Pop Princesses Who Went Bad

It's a tale as old as pop music itself: an innocent young singer pulls a career 180 and suddenly jumps on the bad-girl train. The transition doesn't always give rise to a revitalized career, but it does give fans (and other interested parties) something new to talk about (and look at). Here are 18 pop princesses who got naughty.

Katy Perry Katy Perry's first musical iteration was as a Christian rock artist named Katy Hudson. Fortunately for all of us, that didn't last long.

Christina Aguilera Aguilera dropped her good-girl image at the start of her Dirty phase in favor of something a little more interesting.

Nicole Scherzinger Before she joined the Pussycat Dolls, Scherzinger's first major gig was a spot in Eden's Crush, a very tame, teen-oriented girl band that once appeared on Sabrina the Teenage Witch.

Britney Spears Spears has never quite been the innocent type, but her later albums and outfits make that old school girl uniform look positively conservative.

Mariah Carey Carey got famous for her singing talent, but it didn't take long for her other talents to emerge.

Avril Lavigne Forget the pop-punk look. Lavigne rocks the hell out of some lingerie and not much else in her 2011 music video for "Goodbye."

Keri Hilson She was just a talented R&B singer before she became a talented R&B singer who also raps and takes her clothes off.

Selena Gomez Pictured at center left, Gomez made efforts to shed her Disney persona with a role in the bikini-heavy film Spring Breakers.

Vanessa Hudgens Same goes for Hudgens. We like this movie already.

Lady Gaga Before she was a bestselling musician and a trend-setting sexpot, Gaga was Stefani Germanotta, a musical conservatory student at NYU's Tisch School of the Arts.

Debbie Gibson The former '80s pop idol went the naughty route with her image when she stripped down for a Playboy shoot in 2005.

Rihanna When she first emerged on the scene Rihanna was written off as another bubblegum pop star. A few years later and she's the hottest thing in music in more ways than one.

Jessica Simpson Three words: Dukes of Hazzard. Three more: bikini carwash video. Google it.

Miley Cyrus From children's television star to this. We can dig it.

Kylie Minogue Minogue broke out of her good-girl shell sometime around the new millennium when she showcased her flirtatious side on the track "Spinning Around."

Paula Abdul She was just another cute Laker Girl until the video for "Cold Hearted" made her a sexy sensation.

Tiffany Another former '80s star who took it all off for Playboy, Tiffany used the shoot to remind everyone why they liked her in the first place.