The Daily Mail — One of the biggest pop-music collaborations of the year took the stage at the Billboard Music Awards on Sunday night. more info

MTV.co.uk News — The due took to the stage together to debut their collaboration at the Billboard Music Awards... more info

MTV.co.uk News — …like has she had a chin implant or wut? more info

Perez Hilton — What an amazing night at the Billboard Music Awards!! Even though the evening was fun for all, not everyone was lucky enough to walk away with awards like One Direction and Iggy Azalea. Check out the FULL winners list (below)! BILLBOARD CHART ACHIEV... more info

Perez Hilton — Those sneaky little ladies! Britney Spears' performance of Pretty Girls with Iggy Azalea at the Billboard Music Awards was hot, hot, hot… …but it seems there might be a little reason why it was so good - it was PRE-TAPED! We've EXCLUSIVELY heard ... more info

Perez Hilton — Is it 2003, because Britney Spears just took us BACK!!! The singer teleported onto the stage with Iggy Azalea at the Billboard Music Awards for the first performance of their song Pretty Girls. Brit danced ALL over the stage and looked like she was h... more info

E! Online — It's Britney, bitch! For the first time in almost four years, Britney Spears appeared on an awards show stage to perform one of her smash hit singles. Let's just say she's... more info

Time — The rapper and the pop singer teamed up for their first joint performance more info

Perez Hilton — Left: Taylor Swift and Calvin Harris making us fantasize about the potential wedding of the century!! Right: Iggy Azalea and Nick Young fabulously holding their own. But we wanna know… Which Couple Is Your Favorite? Taylor Swift and Calvin Ha... more info

L.A. Times - News — more info