Who Do You Think You Are?returns for its second season on TLC and its fifth season overall on Wednesday, July 23 at 9/8c. The second season of TLC's genealogy docu-series "Who Do You Think You Are?" will feature six new journeys with Valerie Bertinelli, Jesse Tyler Ferguson, Lauren Graham, Kelsey Grammer, Cynthia Nixon, Rachel McAdams and her sister, Kayleen McAdams.
Also, TLC has acquired 10 episodes from the show's previous seasons on NBC. The episodes feature Matthew Broderick, Lisa Kudrow, Rob Lowe, Reba McEntire, Tim McGraw, Gwyneth Paltrow, Sarah Jessica Parker, Brooke Shields, Vanessa Williams and Rita Wilson.
Read the announcement at http://www.thewrap.com/tlc-who-do-you-think-you-are-season-5-lineup-preview-premiere-date/