MTV.co.uk News — The due took to the stage together to debut their collaboration at the Billboard Music Awards... 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 — Could 11-year-old Hayden Panettiere be more precious?! On Friday, a video of a young Hayden paying homage to Britney Spears resurfaced…and it's AH-mazing. In the clip, the blonde beauty confidently belts out Spears' hit, (You Drive Me) Crazy to the... more info

L.A. Times - News — more info

Perez Hilton — The music video for Britney Spears and Iggy Azalea's pop duet Pretty Girls has CRASH LANDED onto our planet! And we love it! The video, co-directed by Azalea, takes a page from a cheesy '80s science fiction movie — which includes transformations, d... more info

Time — Iggy plays an alien who gets a valley-girl makeover courtesy of Britney more info

MTV.co.uk News — The pair have finally premiered the promo, which sees Iggy play an alien... more info