Rebecca rules.(Rebecca Romijn-Stamos)

Rebecca Romijn-Stamos--modeling's goddess-next-door--dishes why she left House of Style, where she's headed next--and the way she keeps her marriage's mojo working.

* As any red-blooded American man can tell you, Rebecca Romijn-Stamos knows how to stuff a wild bikini. Actually, she could probably shimmy into a Hefty bag and still look like the Cosmo cover girl she's been three times in the past two years. Still, if there were one getup that best reflects the real Rebecca--the fun-loving, anything-for-a-laugh, Birkenstock-wearing California girl--it would be the one-of-a-kind ensemble she wore to the recent cross-dressing-themed birthday party she threw for her husband, actor John Stamos.

"I dressed as John, circa 1985," says Rebecca, 27, over salad and hummus at Taverna Tony, a friendly Greek restaurant near the couple's Mediterranean-style Malibu mansion. "I wore a black mullet wig and big sideburns like he had when he was Blackie on General Hospital. I finished the look off with black leather pants and drum sticks in my back pocket."

It's Rebecca's nature to prefer doing a goofy impression to trying to impress people as some glamour-puss version of herself. (Today, the 6-foot blond stunner is all low-key--dressed in a long-sleeved white leather top, green corduroy pants, and $5 Chinese slippers.) It's no surprise then that she's spent the last year parlaying her considerable popularity as a model and TV host (she just finished a two-year gig on MTV's House of Style) into an honest-to-goodness acting career. "Modeling was fun, but I was getting restless," explains Rebecca. "Acting's my new challenge, and I'm loving it."

Finding Her Acting Mojo