On the heels of Britney Spears sharing with us the ten things that make her happy, we get a first listen to her new track with Iggy Azalea, "Pretty Girls." Though Britney gets top billing, as other outlets have already pointed out, the track sounds a lot like one of Azalea's -- "Fancy." No matter. The dance-pop, girl power jam has a catchy beat and some pretty great track art. Here's hoping the music video includes a mid-00s outer space theme, too! Give the song a listen, above.