Jessica Capshaw Expecting Second Child

UPDATED 04/07/2010 at 09:55 PM EDT • Originally published 04/07/2010 at 04:55 PM EDT

Jessica Capshaw of Grey's Anatomy and husband Christopher Gavigan are expecting their second child later this year. "They are thrilled," the actress's rep tells PEOPLE.

Capshaw, 33, the daughter of actress Kate Capshaw and step-daughter of Steven Spielberg, has 2½-year-old son Luke with her husband Gavigan, the CEO of Healthy Child, Healthy World, a national non-profit.

Leave your congrats for Capshaw at PEOPLE Moms & Babies.

See what other readers have to say about this story – or leave a comment of your own

PHOTOS: Who's Due Next?

Get a sneak peek of this week's issue – Justin Bieber's world, Jennifer Hudson's new body and Maksim Chmerkovskiy and Erin Andrews's relationship – which is on newsstands Friday