Singer Marie Osmond has signed on to judge US talent competition CELEBRITY DUETS. Osmond will join rocker Little Richard and producer David Foster for the competition that pairs recording stars with celebrities not known for their singing. Among the singing stars signed for the show are Michael Bolton, Belinda Carlisle, Peter Frampton and Macy Gray, who will be paired with actors including Lucy Lawless, Cheech Marin, and Lea Thompson. The show premieres 29 August (06) on the US Fox network.