Fashion's Night Out is only three days away and we're putting the finishing touches on our plans to cohost the Elizabeth and James pop-up shop event. Designers Mary-Kate and Ashley Olsen picked their favorite look from a FabSugar reader — see the winning outfit here — and the lucky lady, Jamie from Alabama, will be flying to NYC with her boyfriend to attend the big event, get styled for the bash and meet Mary-Kate and Ashley! Last week we revealed some fun new details about the themed pop-up shop where Sunday, Sept. 12 is FabSugar Day. Pop and Fab will be throwing a party at the store on Sunday from 2-4 p.m. — stay tuned for more on that. We'll be following Jamie's journey to the biggest night in fashion and documenting the whole thing for PopSugarTV, so stay tuned and for now, check out this video sneak peek at the pop-up shop!