Jessica Capshaw and Christopher Gavigan

Grey's Anatomy star Jessica Capshaw gave birth to her third child Thursday, People reports.

Daughter Poppy James Gavigan joins older siblings Luke Hudson, 4, and Eve Augusta, 20 months. "Our hearts are bursting with love and gratitude upon the arrival of our baby girl," Capshaw, 35, and husband Christopher Gavigan told the magazine.

Check out photos of Jessica Capshaw

Capshaw and her husband, who co-founded The Honest Company, have been married in 2004.

Although her character, Arizona, was involved in a disastrous plane crash that took the life of fellow Seattle Grace doc Lexie Grey (Chyler Leigh) in last season's finale, Capshaw will be back for Grey's ninth season.