Justin Bieber’s girlfriend Selena Gomez, 18, will be seen this summer in a new movie Monte Carlo. The movie is about three young women vacationing in Paris find themselves whisked away to Monte Carlo after one of the girls is mistaken for a British heiress. The movie also stars Leighton Meester, Katie Cassidy and Cory Monteith. We have the trailer for you below! Enjoy!