The Que Bueno Mexican restaurant in the Westminster Promenade shopping center dramatically transforms around 10 p.m. on Friday night into Ultra Sheer Nightclub. Long stretches of sheer cloth cover the windows, a DJ takes up a central post at the back, and an elaborate laser light show begins. Two nights out of the week, the spacious restaurant morphs into an after-hours dance hall that draws crowds of up to 350 party-goers on a typical Friday or Saturday night. The staff pulls off the transition fairly seamlessly; the space's airy dining room and open dance floor seem tailored for the late-night dance sessions. The music is a mix of commercial fare from radio promoter 95.7 The Party and the Sheer DJ's tailored brand of house. There's no cover to get in, but the club features a VIP section upstairs to rent for about $250, as well as reserved spaces at tables along the wall available for a one-bottle fee.