Genealogy series 'Who Do You Think You Are?' to feature Cynthia Nixon, Rachel McAdams

SILVER SPRING, Md., June 4 (UPI) -- Cynthia Nixon and Rachel McAdams are among those featured on the new season of Who Do You Think You Are?

The 48-year-old Sex & the City actress and 35-year-old The Notebook star are set to explore their heritage on the genealogy docuseries show. The program facilitates various celebrities to take an in-depth look at their family history, and the stars often discover surprising information and secrets in the process.

The series aired for three seasons on NBC, and will return to TLC for a second season next month. The upcoming episodes also feature Valerie Bertinelli (One Day at a Time), Jesse Tyler Ferguson (Modern Family), Lauren Graham (Gilmore Girls), Kelsey Grammer (Cheers, Fraiser) and Rachel's sister Kayleen McAdams. Past stars include Sarah Jessica Parker, Brooke Shields, Tim McGraw and Vanessa Williams.

The new season of Who Do You Think You Are? premieres July 23 on TLC.