Britney Spears showed up at Nicki Minaj's after party last night at The Factory in West Hollywood!
Spears said, "I had such an amazing time hanging with Nicki and all the boys at The Factory in West Hollywood. Nicki is such a star and is so sweet and you could feel the heat and the energy from the crowd the minute we walked in. I think this summers tour with Nicki is going to be my best ever. I can't wait!"