Gossip Girl's Penn Badgley just got married to Jessa from Girls' sister

Whaaaaaat?

First of all, who is she and second, how did we not know about this?

Penn Badgley aka Dan from Gossip Girl aka Gossip Girl himself got married yesterday (if Instagram is to be believed) to Domino Kirke, sister of Jemima Kirke who plays Jessa on Girls.

The ceremony took place in a courthouse, the reception in some achingly hip New York eatery, the cake was vegan and gluten free, and the bride's sister wore jeans.

The bride - who unlike Jemima and her other sister Lola who is also an actress - is a doula. She looked splendid in a white lace number, and the entire affair looked laid back and lovely, just like Dan pretended he was until his GG outing.

Domino and Penn have apparently been dating since 2014 and have obviously kept completely out of the spotlight. He's now focusing on his music, we believe. Got to love this Gossip Girl and Girl crossover.