Cyrus: 'I'll babysit for Pete and Ashlee'

Miley Cyrus has offered to babysit for Ashlee Simpson and Pete Wentz.

The Hannah Montana star spoke to Wentz during an appearance on F'N on MTV last week.

"I just met your beautiful wife backstage," said the 15-year-old. "I worship her. I'll babysit!"

Cyrus performed her tracks '7 Things' and 'Fly On The Wall' on the show. She also hosted last night's Teen Choice Awards, which gave gongs to Hayden Panettiere, the Jonas Brothers and David Beckham.

Simpson and Wentz are currently expecting their first child.