Actress Kaylee DeFer and musician Michael Fitzpatrick are now proud parents. 

Gossip Girl star DeFer and Fitzpatrick welcomed their first child together into the world on September 20^th.

"Kaylee was a rock star!" the proud new dad said of the birth according to Us Weekly.

Theodore Ignatius Fitzpatrick was born at 10:14 pm last Friday at 8 pounds and 13 ounces. 

Fitzpatrick was set to perform with his band on Friday but had to change plans with his partner went into labour.

"Hey, San Diego, unfortunately we will not be playing at 91x fest today because FORTUNATELY there is a baby Fitz coming!" a message was posted on the band’s Facebook page. 

"Thank you so much for understanding. We hope to make it up to you all soon!"

DeFer confirmed her pregnancy back in May telling Us Weekly, “We weren't planning on getting pregnant, so right now we're just enjoying being pregnant."

"We think it's a boy. Well, the doctor is 95 percent sure it's a boy. The baby was really shy that day. He was sleeping," she joked. "We had a girl name, and when we found out it was probably a boy, for some reason we felt like we needed to meet him."

Congratulations to the new parents!