Swift, Bieber, Mars to perform at Billboard Awards
This March 29, 2013 file photo shows Taylor Swift performing at the Prudential Center in Newark, NJ Billboard announced Wednesday, April 3, that Swift, Justin Bieber, Bruno Mars and R&B singer Miguel will perform at the Billboard Music Awards on May 19 in Las Vegas.
Fans of Taylor Swift were given an extra big treat last night when Justin Bieber joined her on stage!