Katy Perry attended the 2014 ARIA Awards in Sydney, Australia on Wednesday, and the 30-year-old singer wowed in a sexy Jaime Lee two piece outfit. From the see-through side panels to her tiny waist peeking out, it looks like girlfriend has been busting her butt at the gym -- she looks incredible!

Katy was a presenter at the show, and while she was nominated for Best International Artist, she ended up losing that award to the boys of One Direction, all of whom showed up and hit the red carpet. Yup, even Zayn! Though he didn't look too happy about it...

The group performed "Steal My Girl," and after the show Niall Horan tweeted, "Just won an ARIA ! Yes bruu ! thank you to all the Aussie fans for voting for us! Love you!" Liam added, "Thank you so much Australia you guys are amazing another great day and another award huge!!!!!"

While Zayn Malik has been hit with reports that he's abusing drugs, we have to say, he did a pretty good job belting it out onstage: