James Marsden Debuts Baby Son William: Picture

James Marsden and son William in Los Angeles, California on May 26, 2013. MIAN/AKM-GSI

Look at those cheeks! James Marsden spent at least some of his holiday weekend with a very special little guy: William Luca, the baby boy he welcomed with ex-girlfriend Rose Costa back in December. In the first-ever glimpse of his son, the 30 Rock actor pushes a stroller with one hand and holds William — pouting contemplatively with a baby-blue cap — in another.

William is the third child for Marsden, who shares kids Jack and Mary with ex-wife Lisa Linde. Linde filed for divorce from the X-Men star in September 2011 after 11 years of marriage; Marsden and Costa dated briefly following that split, with reports of her pregnancy surfacing last June.

The handsome star also became a dad again recently on the small screen: On last December's series finale of 30 Rock, his character Criss Chros and new wife Liz Lemon (Tina Fey) adopted two kids.

Sign up now for the Us Weekly newsletter to get breaking celebrity news, hot pics and more delivered straight to your inbox!

Want stories like these delivered straight to your phone? Download the Us Weekly iPhone app now!

Close popup

Welcome to In Motion

Bring photos to life with Us Weekly's exciting new mobile experience!

What's In Motion? Tell me more

What's In Motion?

Go back

How to Use In Motion

What's In Motion? Tell me more