Actresses Sarah Jessica Parker, Susan Sarandon and Lisa Kudrow will star in a new NBC celebrity genealogy series, Who Do You Think You Are?, that examines the family trees of stars. The six-episode series, produced by Lisa, is based on a BBC documentary series popular in Britain.

“This show personalizes history and turns it into a gripping narrative,” Lisa said in a statement. “The most striking thing about the show is the realization of how connected we all are.”

Who Do You Think You Are? will debut Monday, April 20, at 8 PM.

Susan Sarandon, Angie Harmon, Kate Hudson, Elisha Cuthbert, Molly Sims, and Denise Richards are among the modern-day celebs who have stripped off in some sultry photos, taken in the spirit of famed 1940s pinup girls like Rita Hayworth and Lana Turner, for Hollywood Pinups, a new book from photographer Timothy White.

Slightly NSFW After The Jump

Molly Sims nude for Hollywood Pinups.

Actress Angie Harmon in Hollywood Pinups.

Kate Hudson Hollywood Pinups.

Elisha Cuthbert

Mary-Kate and Ashley Olsen also posed for a few photos published in the book. You can check those out here.

The book, which is due for release later this month, also features Actresses Mary-Kate Olsen, Kate Hudson, Molly Sims, and 62-year-old Susan Sarandon have posed semi-nude in a series of racy 1940s-pinup poses that will be featured in a new book entitled Hollywood Pinups.

“I actually look forward to getting older – it is certainly better than the alternative – when looks should become less of an issue, and when who you are is the point,” says Sarandon, 62.

“I haven’t had any surgery, but I don’t knock it. I think that women, anyone, has the right to do anything that they like with their bodies if it makes them feel good about themselves.”

The historical guide written by Timothy White arrives on booksellers’ shelves later this month.