When an overwhelming response to last year’s Victoria’s Secret online fashion show caused the company’s Web site to crash, one thing was confirmed: Short hemlines attract. It’s something the fashion-savvy folks at the A Bar learned with last year’s White Party -- an event they’re bringing back for a second pret-a-porter show on Saturday, May 27. The LoDo hot spot is inviting Ascent Modeling and Salon Armand to bring out the Tyra Banks in us all; from 9 p.m. to 1:30 a.m., agency models and selected audience members will strut down the catwalk wearing all-white attire and white hairpieces. Live DJs and surprise theatrical acts will round out the night, Milan style. Who says you can’t wear white before Memorial Day?