Lionel Richie researches his roots
Lionel Richie and actress Ashley Judd are among the stars taking part in the US series of Who Do You Think You Are?
Country singer Tim McGraw, actor Steve Buscemi, as well as Vanessa Williams, Rosie O'Donnell and Kim Cattrall will also be tracing their family roots in the new season of the show.
Lisa Kudrow, the former Friends star who is an executive producer of the show, said: "It's not just like you show up for a couple hours and you're done. It's kind of a commitment. So the people who want to do it are genuinely interested in finding answers to their questions."
Past episodes detailed Brooke Shields' French royalty connection and the discovery that Sarah Jessica Parker's ancestors were linked to the Salem witch hunt hysteria, Lisa said.
Sex And The City star Kim featured on the British version of the show.
The US version of Who Do You Think You Are? returns early next year on NBC.