The Disney star is lending her voice talents to the upcoming animated Disney film, "Bolt," alongside John Travolta. And according to John's wife, Kelly Preston, the collaborations between Miley and John may just be getting started.

"Johnny may sing with Miley," Preston told Marc Malkin of E! at the Step Up Women's Network's Inspiration Awards luncheon at the Beverly Wilshire Hotel on Sunday.

"We [now] know Miley very well, and she's a sweetheart," Kelly added.

As for Miley's recent controversial Vanity Fair photos, Kelly said she had not seen them.

"All I know is that I know her personally and she's a really good girl with a great head on her shoulders," she said.

Miley and John's animated "Bolt" is schedule to hit theaters Thanksgiving 2008.