Cam Gigandet and Dominique Geisendorff Credit: Michael Buckner/WireImage

No. 3! Broken Vows star Cam Gigandet and his fiancee, Dominique Geisendorff, have welcomed their third child together. The happy mom announced the news via Instagram on Tuesday, Dec. 1, sharing a sweet photo of their daughter along with her name, Armie Heartly Gigandet.

Armie joins the O.C. alum and his fiancee’s 6-year-old daughter, Everleigh Rae, and 2-year-old son Rekker Radley.

💘Armie Heartly Gigandet💘

A photo posted by Dominique (@wildheartwhispers) on

“So thankful for the troops out there that protect this little (expanding) family of mine... #beyondgrateful #notgratefulforthegnarlymorningsickness,” the third-time mom captioned an Instagram photo of her sonogram on Memorial Day this past May to announce they were expecting.

The happy parents have been engaged since 2008. 

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