Britney Spears is back in Las Vegas, and she's bringing "Pretty Girls" along with her. After a little hiatus from her Piece of Me residency at Planet Hollywood, Spears returned to Sin City this week, and she's expanded her setlist to include her latest single.

Spears performs the Iggy Azalea featuring hit during Piece of Me now, SPIN reports. Though Azalea herself is not in Las Vegas to take on the single alongside Spears, she appears throughout the entire performance via a projected screen, dancing along and syncing her raps to the single.

As for Spears, she channels the '80s spirit of the "Pretty Girls" music video by rocking a neon yellow and pink onesie with matching bright pink shoes. She's backed by fittingly neon-dressed dancers, who get old school on rollerblades and bicycles. And while the music and singing itself may be less than live, the dancing is fittingly cute and energetic. Of course, Spears looks better than ever, too.

Watch the performance below:

"Pretty Girls" was a modest hit for Spears and Azalea, peaking at No. 29 on the Billboard Hot 100. Spears will be performing in Las Vegas at Piece of Me for the rest of the year, when her contract at Planet Hollywood ends.

See More Britney Spears
Join the Discussion