Which ‘Dancing’ Pro Choreographed Chelsea Clinton’s First Dance with Marc Mezvinsky?

Chelsea Clinton wed longtime beau Marc Mezvinsky Saturday evening in Rhinebeck, New York -- but was the happy couple's special first dance choreographed by one of these "Dancing with the Stars" pros? Read on to find out.

A source tells ET that it was none-other-than ballroom bad boy Maksim Chmerkovskiy who choreographed the duo's first dance as husband and wife.

Click here to see ET's photo album of Chelsea's lavish wedding ceremony, including her show-stopping gown by famed designer Vera Wang and her presidential walk down the aisle with proud dad Bill Clinton!