By Jennifer Davis
Updated: Jun 13, 2016 @ 2:46 pm
Jon Kopaloff/FilmMagic

Congratulations, Jessica Capshaw! The actress, who plays Dr. Arizona Robbins on Grey's Anatomy, welcomed her fourth child on May 2, and she took to her Instagram account yesterday to share the first photo of her daughter, Josephine Kate Gavigan.

"I am endlessly grateful for her safe arrival and my heart is so full of love that it threatens to burst..." she captioned the sweet announcement, which show her newborn baby sleeping peacefully in an adorable all-white onesie and matching hat (below).

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Little Josephine is the fourth child for Jessica Capshaw and her husband, Honest Company co-founder Christopher Gavigan. The couple is also parents to Luke, 8, Eve, 5, and Poppy, 3. Congratulations again to the growing family!