BB2 Prom and FormalDIFFA isn’t just about its spring couture collection. Each fall, designers create one-of-a-kind wreaths — from the uber-fabulous to the tastefully elegant — to be auctioned off in support of DIFFA’s HIV/AIDS work. (I bid on and won this one last year.) This year, the champagne-and-hors d’oeuvres soiree is set for Nov. 7, at Dallas Market Hall, from 6–9 p.m. Tickets are $75, but the real treat is placing the winning on a cool wreath.