The evening before the exciting gossip broke that Sarah Jessica Parker and Matthew Broderick are officially expecting twin girls via a surrogate mother, the actress sure looked like a mom-to-be: glowing and forgoing those famous cosmos.

"She was in such a great mood, so sweet to everyone and so happy," says a guest who attended the party at 675 Bar for Broderick's film, Wonderful World.

"They were tucked into a corner throughout the night. He drank martinis and she drank water. They were really loving and adoring. She did look beautiful."

The actress has been ready for more children for a long time.

"They've always wanted to become parents again," says a source who has known the couple for years. "They realized after the first or second year after [son James Wilkie, now six] was born that it would be nice to have another baby."

While "they've always talked about [more] kids, it just wasn't happening," says a pal, as Parker "had difficulty getting pregnant. So they went the surrogate route."

Friends say the couple just loves being parents.

"They are great parents," says a source. "They have a good time with their son. Matthew is very hands-on. He loves to get on the floor and play with James. He's a kid himself so he loves to act like one. And James, of course, loves it."

So how is Sarah Jessica Parker preparing for two baby girls? This week, she stepped out to do a little shopping at the Manhattan toy store, Kidding Around.

Nothing like retail therapy... or celebration. For a look at cute twins that were just born, check out the new sons of Charlie Sheen and Brooke Mueller!