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

TMZ — The Pretty Girls have landed ... and they're out of this world.Check out the 10 most WTF moments from Britney Spears and Iggy Azalea's new music video. Enjoy the trip! 10. Take her to your leader. 9. I'm so excited! 8. Hot lips. 7. Don't look at myâ€... more info

Perez Hilton — The ever elusive Sia is only heard, not seen in Giorgio Moroder's new music video for Deja Vu! But at least the video is filled with a bunch of blonde wig-wearing Sia doppelgängers! [ Related: Which Hit '80s Song Did Britney Spears Just Cover? Liste... more info