Katy Perry 'Roars' at MTV VMA show

Katy Perry was in the spotlight from start to finish at Sunday's Video Music Awards.

She hit the red carpet in a ferocious animal print Emanuel Ungaro dress from the fall 2013 collection, showing some serious thigh.

"I'm just trying to bust a little Angelina Jolie up in here," she told MTV's Sway during the pre-show.

She showed off a grill, a la Madonna, Rihanna and Beyonce.

As for what to expect from her Oct. 22 album, Prism, she says it'll be light. (Should we thank John Mayer for that?)

"I let a lot of light into my life," said the pop star. "At first I thought maybe there were going to be darker songs, but instead of having all the darkness come in, I let the light in. And I get to beam them out to the listeners, the fans."

And she closed the show performing under the Brooklyn Bridge in a sports bra and boxing shorts for her new single, Roar.

Stars jumped on Twitter to comment on it:

Oprah Winfrey loved it, tweeting: "@katyperry Hearing you Roar! #MTVVMAs"

Designer Betsey Johnson wrote: "It's official! @katyperry is my new hero! I ??her song #roar &the way she rocked #VMA awards! She's got the eye of the tiger! Xox"

Star Jones tweeted: "Look at #brooklyn doing the dang thing. Fabulous #VMAs"

Nick Cannon added: "I want to box @katyperry."

What did you think of the song?