Luddington, who plays Dr. Jo Wilson on “Grey's Anatomy,” enjoyed the engagement privately for two weeks before announcing the news on social media. She wrote on Instagram, “Sooo this happened on New Year’s Eve… I’m not sure I even let Matt get through his proposal before I started yelling YES YES YES!! Of course it was a yes!” The news comes nine months after they welcomed their baby daughter Hayden. She added, “Also… Hayden approves.. .