Going to the chapel!

Rosie O'Donnell is engaged to partner Michelle Rounds. Her publicist confirms to Us Weekly that the 49-year-old comedian told her Rosie Show studio audience Friday that she and Rounds will say "I do" over Christmas.

O'Donnell and Rounds, a New York City headhunter, made their public debut as a couple in September at Rosie Theater Kids Gala in New York City. 

A show source tells Us Rounds "is very attractive and friendly. Rosie was really proud and showing her off... They seem really happy."

O'Donnell has four children with ex-wife Kelli Carpenter, whom she married in 2007. They split three years later. O'Donnell dated mother of six Tracy Kachtick-Anders for one year before calling it quits last winter.