Singer and former American Idol judge Mariah Carey will appear in an episode of US animated comedy, American Dad.

In the special episode which is due to air in the US on Thanksgiving (Thursday November 28), Carey will play Laura, a cheerleader and football fan who meets Stan at a Cowboys game.

She then invites him to join her party with hilarious consequences, or so we're told.

The show’s executive producer, Matt Weitzman told "Mariah was great to have in the studio.

"She'd never done voiceover work before, but she was clearly so comfortable in front of the mike. She's naturally funny."