Actress Shannen Doherty, 40, married celebrity photographer Kurt Iswarienko in a sunset ceremony on Saturday in Malibu, CA.

It’s the third marriage for Doherty, the former star of ‘Beverly Hills, 90210′ and ‘Charmed,’ who’s had previous short-lived unions with actor Ashley Hamilton and Paris Hilton’s sex-tape co-star Rick Salomon.

But the famously hot-tempered actress and author says she’s learned from those mistakes, telling PEOPLE, “Marriage to me is such a gigantic commitment that it’s not something I’d ever go into lightly anymore.”

Her nuptials with Iswarienko, 37, were filmed for an episode of the couple’s upcoming WEtv reality series.