If/Then headliner Idina Menzel had a special (and very fashionable) visitor on March 26: Sarah Jessica Parker! The new musical tells the story of a newly single woman who moves to New York City—and nobody knows more about being a single gal in NYC than the Sex and the City favorite! Parker turned 47 this week, and what better way to celebrate than seeing a brand new Broadway show? The Tony-winning star also welcomed director Adam Shankman (below) backstage after her performance. Fun fact: What does this trio have in common? They’re all Glee alums! Check out photos from the backstage visit, then see Menzel in If/Then at the Richard Rodgers Theatre, opening March 30.