She was accompanied at the event by her husband, Matthew Broderick, but she ran into some old Sex And The City cast members at the event!
Mario Cantone (who plays Anthony in SATC) and Cynthia Nixon (Miranda) were there to support her - and of course to have a mini Sex And The City reunion.
Sarah Jessica Parker has said that her role in Divorce is very different from that in Sex And The City, but is someone she can definitely relate to.
"It's not so much I've been in her position, but I understand somebody who wants to find fulfilment, they need to rescue themselves and their lives," she said. "Also being a mother who's concerned with making the right choices for her own children and handling something that's potentially so painful, how does one – how do you talk about it in a way that's not patronising but is careful. That mattered a lot to me in how we talked about it."
Divorce is coming to HBO on October 9.