Miley: 'Liam Hemsworth is my boyfriend'

Miley Cyrus has confirmed that she is in a relationship with actor Liam Hemsworth.

The popstar, 17, met Hemsworth, 20, while working on the set of their upcoming film The Last Song. Cyrus first went public with the romance at the Academy Awards on Sunday night.

"Me and my boyfriend went on a bike ride," she told E Online, when a reporter asked what she was doing before the show.

Later in the night, Cyrus met up with Hemsworth at the Elton John AIDS Foundation viewing party where the couple was spotted eating hamburgers from the event crew's catering truck.

Cyrus will star in the upcoming film Wings, based on a novel by Aprilynne Pike.