Monte Carlo Movie (2011)

“Monte Carlo” starring Selena Gomez, Leighton Meester, Katie Cassidy. Three young girls use their savings for a dream trip to Paris, which turns out to be a big disaster. When they decide to take a break from their lousy tour and sneak into the lobby of a 5-star hotel, one of the girls (Grace) is mistaken for a spoiled British heiress by the name of Cordelia. Before they get the chance to reveal their true identities, the girls are wrapped up in a whirlwind of paparazzi, couture gowns, storybook romances, and living the glamorous life in Monte Carlo. (wikipedia)