Miley Cyrus: Sushi, Justin and Song

Miley Cyrus was acting awfully fishy with her BF and coworkers on Wednesday.

The Hannah Montana star hit up Hollywood eatery Sushi Q—apparently a favorite chomping ground for her—with her underwear-shilling beau, Justin Gaston, along with co-stars Emily Osment and Jason Earles.

Apparently as thrilled with the food there as Miley is, Gaston, Osment and Earles had more than their fair share of raw fish. “They ordered quite a bit of sushi,” says an onlooker. “They seemed to be having a good time—they were laughing.”

Not just laughing—singing, in Miley’s case. Perhaps overwhelmed with joy at her meal, the 16-year-old tweener queen burst into song right there in the packed restaurant. An eyewitness notes that the song had something to do with a supernova.

Maybe she was busting out the Oasis classic “Champagne Supernova”? It wouldn’t be surprising if she’d decided to find a new favorite British band, after getting dissed so badly by Radiohead at the Grammys this year.

Whatever song she was singing, it’s nice to know that she was in a much better mood than she was during her last meal with Justin.