LOS ANGELES, America- "Sex and the City" actress Sarah Jessica Parker and her husband Matthew Broderick are expecting twin girls via a surrogate mother, their representatives said on Tuesday.

Parker, 44, and Broderick, 47, "are happily anticipating the birth of their twin daughters later this summer with the generous help of a surrogate. The entire family is overjoyed," a statement from the couple said.

The couple have a six year old son, James, and have long wanted to add to their family but had no luck, an unidentified friend was quoted as telling Entertainment Weekly magazine.

They turned to a surrogate last year, the magazine said.

Michelle Ross, the surrogate mother, openly declared on her myspace page about her bisexuality, tattoos and love for fetish footwear. Yet despite her love for dominatrix gear, Ross's ex-husband loves to help couples like Sarah Jessica Parker and Matthew Broderick, expand their brood, said New York Daily News.

"They had a lot of unsuccessful tries," the friend was quoted as saying. "They came to the conclusion that this was going to be the best alternative for expanding their family."

Parker is expected to begin shooting a sequel later this year to the hit movie version of "Sex and the City" along with fellow stars Cynthia Nixon, Kim Cattrall and Kristin Davis.

Broderick, star of the Broadway musical and movie "The Producers", and Parker married in 1997.