Jessica Pare Jessica Pare

Jessica Paré's got the Blues.

The Mad Men actress and her boyfriend, John Kastner, have welcomed their first child together - a baby boy named Blues Anthony.

Gallery: The craziest celebrity baby names

Kastner shared the news via an Instagram post on Friday, showing his 8-year-old daughter Summer holding her new baby brother. "Please meet Blues Anthony Paré Kastner...," he wrote.

Please meet Blues Anthony Paré Kastner...

A photo posted by johnkastner (@johnkastner) on


Paré and Kastner have been dating since 2012, and she announced last October that she was pregnant.

TODAY'S VIDEO: What has the cast of Gotham laughing this hard?