Credit: Jack Guy

Shannen Doherty couldn't pick just one dress for her October 15 wedding to photographer Kurt Iswarienko -- so she wore three!

"There was no question. The moment I saw it, I knew it was my dress," Doherty says of her first Monique Lhuillier gown, which featured a sweetheart bodice and a garnet sash. "I felt like a fairytale princess."

The actress' second Lhuillier gown "was blush with lots and lots of tulle," Doherty says. As for the third? "I took the lace from my mom's wedding gown, designed a dress and had it made," the Beverly Hills, 90210 alum tells Us Weekly of the knee-length reception dress. "It was my get-down and be-sexy bridal dress!"

Iswarienko, who wore a Ralph Lauren tuxedo, mimicked his bride by changing his tie each time Doherty donned a new dress. "It was my idea" Doherty insists.

The couple's Malibu nuptials will be part of the upcoming WE reality show Shannen Says, premiering in 2012.

For more on Doherty's big day details -- including her dazzling diamond jewelry, savory dinner menu and the touching tribute to her late father -- pick up the new issue of Us Weekly, out Friday!