Ariana Grande & Iggy Azalea's 'Problem' Becomes Number One in the UK!

Iggy Azalea dances it out during her set at the 2014 Wireless Festival on Sunday afternoon (July 6) in London, England.

The 24-year-old rapper wore a matching shirt and shorts set for her performance.

PHOTOS: Check out the latest pics of Iggy Azalea

That same day, it was revealed that Ariana Grande and Iggy‘s song “Problem” made UK history by becoming the first number one single based on sales and streaming, according to NME. Congrats ladies!

Earlier that week, Iggy bared her body in a revealing outfit while performing with Rita Ora during the festival.

15+ pics inside…