Credit: Larry Marano/

She may have been performing in Boca Raton, Florida on Thursday night, but Selena Gomez's costume choice seemed to be more inspired by Las Vegas.

The singer, 19, took to the stage in a showgirl-style gold sequined corset top and train.

When compared to fellow pop princesses Taylor Swift, 21, and Miley Cyrus, 18, Gomez's performance attire came in second place behind the "Hannah Montana" star's racy look in a recent Us Weekly poll.

While Gomez rocked out in the super hot ensemble, boyfriend Justin Bieber was hanging out backstage, unlike last week when mid-concert he surprised the brunette beauty and her fans onstage where he sang "Cry Me a River" and "Favorite Girl."