Likewise, men should not wear ill-fitting clothing and should ensure they are properly groomed, so as not to appear as though they could not put forth the effort to be presentable for the occasion.
Loose, breathable and easy to clean, they cover most of the requirements for maintaining comfort (to the extent that's possible) while still looking presentable should you be asked to enter the dining room for any reason.
One word of caution, though: most of these collections only offer things you'd want to wear UNDER your clothes; they don't leave much room to wonder whether or not that corset/bustier/bra top is presentable for public.
Business attire: Whether it's for a meeting with the corporate president or a working lunch with an old colleague, Avenue has a collection of plus size outfits presentable for work.
The primary way to deal with this is through attitude - cheerleaders wear Spankies or bloomers which are completely presentable and go at their routines with all the enthusiasm and spirit they can muster.