You are cordially invited to get completely naked.(secret strip-down soirees at colleges)

University students across the country are holding secret stripped-down soirees where less is definitely more. Cosmo goes undercover to get the scoop on the new college hedonism.

* Melinna Weiss [*], 21, is nervous until the doorbell rings. "That must be the guy with the keg," she says. It's already past 10 o'clock on a Friday night, and though Melinna knows people won't arrive at the party until late, there's still a lot to get done. "Do we need anything?" she calls out to her Ivy League roommates, Sarah and Emily. "Do we have cups?" But no one worries about whether or not a favorite shirt is clean. No one scrutinizes her outfit in front of a full- length mirror. Instead, Melinna, Sarah, and Emily go into one of the bedrooms and shed their sweaters, shirts, jeans, bras, and underwear until they are completely naked.

And then it's time to accessorize.

"It's important to have cute socks," says Melinna as she pulls on some patterned anklets. "And good shoes. The floor's dirty." Emily agrees, zipping up long black leather high-heel hoots. Then they all head back into the living room to pick CDs to play. Suddenly, it becomes clear why they have hung sheets over the windows to guard their party from prying eyes.

In-the-buff college bashes like this one (Melinna is reluctant to identify who she is and where she goes to school) are the biggest trend to hit campuses since Take Back the Night rallies. At Brown University, naked parties happen every fall and spring semester: At Yale, one current junior claims to have been to at least 10 naked parties in his college career. At both Yale and Stanford, students hold a yearly Exotic Erotic party, where guests dress like they're the hired entertainment at an S&M club.

From Northwestcrn University in Illinois to Grinnell College in Iowa to Swarthmore College in Pennsylvania to Pomona College in California, students are taking every opportunity to take it all off.

Nudity has become such a popular pastime on college campuses that the American Association of Nude Recreation is inaugurating Nude U this June, a 10-day series of workshops in Tampa aimed at students interested in the nudist lifestyle. "When you're nude, you shed your shell," says Judy Grisham, a Nude U organizer. "We feel that students will want to be in a place where they're able to project the people they really are." Grisham adds quickly: "No overt sexual behavior allowed." Hmmmm, that little rule might put a damper on enrollment numbers.