Nicki Minaj: Surprise 'Femme Fatale' Tour Guests!

Nicki Minaj rocks a pair of orange high heels as she leaves her hotel on Friday (July 22) in Miami, Fla.

The 28-year-old entertainer was headed to the Britney Spears concert, where she opened for the pop princess with two surprise guests!

During her set, Nicki brought out Sean Kingston and Trina to perform the songs “Letting Go” and “My Chick Bad.”

Sean, who was recently involved in a near fatal jet ski accident, tweeted after the performance, “Just killed it on stage with the lovely @Nickiminaj. had an amazing time feels great to be back on stage esp. wit the hottest female out :-)”

Check out a video of Sean and Nicki performing “Letting Go.”