If you're under 17, you can't see R-rated movies without an adult, but there are no rules about acting in them.
Some of the industry's most famous faces starred in some very adult movies at a young age while others were a little more patient.
2013: Selena Gomez, Ashley Benson - 'Spring Breakers'
Disney sweetheart Gomez and ABC Family star Benson were surprising additions to director Harmony Korine's lurid tale of guns and sex in sun-soaked Florida, Spring Breakers. For both young actresses their decision to take part was based on doing something different and more adult.
2012: Zac Efron - 'The Paperboy'
Efron appeared in 2012's The Paperboy as the film's title character who falls for an older woman while helping his brother, a journalist, investigate a case involving a death row inmate. The Disney star did 10 movies before committing to his R-rated feature.
2008: Jennifer Lawrence - 'The Poker House'
Some might guess Winter's Bone was Lawrence's first R-rated role, but it's actually The Poker House that claims the distinction. She plays a young girl growing up in Iowa in Lori Petty's semi-autobiographical story. Petty wrote the film along with David Alan Grier, of all people.
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