The 32-year-old singer also carried an iced coffee while playing with her long red hair, which she dyed last month.
Britney is currently on hiatus from her Las Vegas "Piece Of Me" residency, which began with a handful of shows in late December and will resume on April 25. She's set to pull in $30 million over the next two years for her Sin City performances.
Two weeks ago Brit...
He even dedicated a song, "Boyfriend," to his on/again, off/again girlfriend Selena Gomez. He told about 100 concertgoers, "This goes out to my baby girl." She just happened to be hanging out backstage.
Other surprise performers included boy band The Wanted, Cody Simpson, Dan + Shay, Tori Kelly and Rixton. The event was held by Bieber's manager Scooter Braun.
Bieber tweeted on Monday: “So yeah had to show up and surprise the crowd night at the #...