Britney Spears Rocks Her Las Vegas Residency Debut

Britney Spears slipped into some sparkling bodysuits for the opening night of her Las Vegas "Piece of Me" residency show at Planet Hollywood Resort & Casino.

Spears wore an array of bodysuits -- from a ring leader-styled ensemble for "Circus" to a full-length diamond-encrusted suit reminiscent of her "Toxic" music video look -- on Friday night for her 90-minute Sin City show.

The 32-year-old looked glamorous in seven different costumes and various wigs as she performed for the crowd, which included Miley Cyrus, Selena Gomez and Katy Perry . Cyrus even got a little frisky with one of the dancers during a set change, MTV noted.

The pop superstar performed 24 of her biggest hits , according to Billboard, like "Oops... I Did It Again," "Everytime," "Lucky," "Crazy," "Womanizer," "... Baby One More Time" and "Til the World Ends." She only performed two tracks from her new album, "Work B**ch" and "Perfume."

Casino executives told the Associated Press the two-year residency may be extended if successful.