Rose McGowan will tie the knot at a former nunnery next month.

The former Charmed actress - who was previously set to marry Marilyn Manson - got engaged to her artist boyfriend Davey Detail in July and the couple are in the final stages of planning their intimate nuptials and honeymoon.

"We're getting married October 12th at a mansion. It used to be a nunnery, so it's perfect for me. As everyone knows, I am a nun! I'm having a New Orleans swing band -- a brass band from New Orleans. I found them on the street," the 39-year-old beauty told UsMagazine.com.

The couple are only inviting close family to their special day. "I have eight brothers and sisters and a massive family. That takes care of it. That's everybody. That's it," Rose said.

The actress will walk down the aisle in an Oscar de la Renta wedding dress and is excited to celebrate their honeymoon in Tahiti: "I've never been. I've always dreamed of having one of those little huts over the water."

Rose was previously engaged to "Beautiful People" rocker Marilyn, but she ended their three-and-a-half year relationship in 2001 citing a "lifestyle difference." She was also set to wed her Grindhouse director Robert Rodriguez after they began a relationship while filming the movie in 2007 but they split in October 2009.

The actress has no doubt Davey, whom she has been dating for more than a year, is the man for her. "He's magic. He's made me a better woman. And I've made him a better man!" she said.