The new eight-episode season will feature a group of celebrities that will include Christina Applegate, Cindy Crawford, Zooey Deschanel, and Chris O'Donnell.
"Who Do You Think You Are? is at home on TLC, going beyond these famous names and revealing the hidden backstories of today's biggest celebrities. We hand-picked these contributors because they are real, down-to-earth individuals who have a deep passion for family, which is central to our brand. Our audience will join them on this emotional journey as they learn never-before-known details about their own lives," TLC executive Amy Winter said in a statement.
"I've never stopped hearing about how much people love Who Do You Think You Are?, and I've always known that we've had more great stories to share," executive producer Lisa Kudrow said.
Added fellow executive producer Dan Bucatinsky, "TLC is a great home for the series, and we join our excited celebrity participants as we unearth some amazing background and surprising histories."
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