Plus Size Wedding guest dresses by dress code. From my Instagram! **size up on purple!! ** Black Tie may be debatable, but I would totally wear it!! The last black tie wedding I attended, my sister-in-law wore a gorgeous red dress with one long flowy sleeve. City Chic is only carried in Nordstrom and Macy’s here in the states. It is an Australian brand and always has THE BEST dresses! LTKWedding LTKOver40 LTKPlusSize