Miley Cyrus is happy post-break up

44221, NEW YORK, NEW YORK - Tuesday August 31, 2010. Miley Cyrus leaves her New York City hotel wearing tiny denim shorts, knee high leather boots, and a sheer black top. Justin Bieber is reportedly trying to recruit Miley for a remake of the musical Grease . Photograph:  PacificCoastNews.com

Miley Cyrus appears to be happy, despite recently splitting from boyfriend Liam Hemsworth.

Walking through JFK airport, 17-year-old Miley was asked about her break up.

She replied: “What’s there not to be happy about? I’m breathing.”

When the photogrpaher asked whether or not she was happy she gave a huge, beaming grin.

Miley was in town, along with her mum Tish, to perform with Justin Bieber for his 3D movie.

Check out the video below.