Britney Spears' 'Pretty girls' arrives online

Singer Britney Spears' new single "Pretty Girls", featuring Iggy Azalea, has landed online.

Spears and Azalea are scheduled to perform the song live at Billboard Music Awards on May 17 at the MGM Grand Garden Arena in Las Vegas, reports aceshowbiz.com.

Spears and Azalea filmed a music video in California last month with the latter co-directing it. Spears wore a leopard-printed crop top and Azalea rocked a denim vest and daisy dukes. They drove an orange jeep and rode a red convertible.