Taylor Swift Sticks Tongue Out for Selena & Justin's Kiss

Seems like Taylor Swift wasn’t too impressed with her BFF Selena Gomez giving her on-and-off boyfriend Justin Bieber a kiss backstage at the 2013 Billboard Music Awards held at the MGM Grand Garden Arena on Sunday (May 19) in Las Vegas.

The 23-year-old entertainer was seen sticking out her tongue when she glanced over at the pair kindly giving each other a kiss on the cheek. Watch the GIF below!

During the show that evening, all three of the young performers hit the stage to sing their recent songs.