Lady Gaga Surprise Audience

 Lady Gaga Surprise Audience with her performance.Lady Gaga changed her costumes four times for a performance, as she kicked off the MTV Video Music Awards on Sunday night.

Gaga's performance started with her face filling the entirety of the screen while wearing a blockhead. What followed was the performance of the many wigs.The pop star, who returned to the stage since hip surgery, performed her new single 'Applause' at the event, the New York Post reported.

She promised during the MTV pre-show that the performance would include costume changes. "It's going to be awesome. We've been rehearsing for a while. ... We put together something that we thought everybody would love."

And she told JustJared earlier this week that it's "definitely the most physically demanding performance I've ever done."

The 27-year-old singer first appeared in a nun's habit and square headdress, while later black unitard-clad dancers helped her change into a blue miniskirt and jacket with oversized shoulder pads, a black unitard and eventually a thong bikini decorated in shells.

she added, "If 'N Sync performs later, though? I'm going to be the happiest girl. Ever."