Sarah Jessica Parker and Susan Sarandon are both slated to star in a new reality series for NBC called "Who Do You Think You Are?"

Based on the BBC hit reality series, "Think" will chronicle celebrities as they explore their ancestral history. The show will be produced by Lisa Kudrow's company Is or Isn't Entertainment in conjunction with the U.K.'s Wall to Wall productions. "This show personalizes history and turns it into a gripping narrative," said Kudrow. "The most striking thing about the show is the realization of how connected we all are."

Viewers will get an opportunity to witness these celebrities make personal discoveries about their family ancestry. As the celebrities discover who their relatives are, the show will also weave in and expose how the lives of everyone's collective ancestors' have shaped world history.

"No other program gives this unique glimpse into the personal lives of celebrities or takes viewers on a quantum leap through history in such an entertaining way," said Paul Telegdy, Executive Vice President, Alternative Programming, NBC and Universal Media Studios. "We are thrilled to have Lisa, Susan and Sarah Jessica kick off this groundbreaking series."

Additional celebrity participants will be announced shortly.

"Who Do You Think You Are?" premieres Monday, April 20th at 8PM.

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