Jessica Pare gives birth to son

Mad Men star Jessica Pare has given birth to a baby boy.

The actress and her partner, musician John Kastner, welcomed their first child together on Thursday (19Mar15).

Kastner shared a photograph of the newborn on Instagram.com, and revealed his name in the caption, writing, "Please meet Blues Anthony Pare Kastner..."

The boy is Pare's first child, but Kastner has an eight-year-old daughter with his ex-wife, Canadian actress Nicole de Boer.