It's a Girl for Tori Spelling and Dean McDermott

By the Associated Press | October 11, 2011 | 4:40 PM EDT

FILE - In this April 10, 2011 file photo, actress Tori Spelling, left, and her husband Dean McDermott arrive to The 22nd Annual Glaad Media Awards at The Westin Bonaventure in Los Angeles, Calif. Spelling gave birth to the couple's third child, daughter Hattie Margaret McDermott on Monday, Oct. 10. (AP Photo/Katy Winn, file)

NEW YORK (AP) — Tori Spelling and husband Dean McDermott have a new baby girl.

Spelling gave birth to daughter Hattie Margaret McDermott on Monday.

The couple confirmed the news over their Twitter accounts, saying the baby is "gorgeous" and the family is "so happy."

Spelling and McDermott already have two children together, Liam and Stella. McDermott also has a son from a previous marriage.

The birth was first reported by Life & Style magazine.

Spelling wed McDermott in 2006 after meeting on the set of a TV movie.

The couple plans to introduce their new baby on the premiere of the sixth season of their reality show, "Tori & Dean: Home Sweet Hollywood." It airs Nov. 29 at 10pm ET/PT on Oxygen.