Katy Perry

We're not sure if it's Independence Day spirit, or Vaudeville spirit, but as long as Katy Perry is showing off her beautiful boobies, we're lovin' it!

The songstress (who denied nuzzling up to Benji Madden the other night in Vegas) performed in Italy yesterday, and she rocked a rather patriotic ensemble onstage. Team USA! Er, that's what she meant, right?