Sleigh bells and wedding bells are ringing for Angie Harmon!

The Rizzoli & Isles actress, 47, announced her engagement to actor boyfriend Greg Vaughan on Christmas, sharing a slideshow of photos from the memorable proposal.

In the first snap, Harmon and Vaughan are surrounded by their children in a family group photo op on the stairs, where they all sport matching holiday sweaters. (Harmon has daughters Emery Hope, 11, Avery Grace, 14, and Finley Faith, 16, and Vaughan has sons Landan Reid, 7½, Cavan Thomas, 10 next month, and Jathan James, 12.)