I’m going to a sales meeting (yawn) and one night entails s posh dinner. Men suited and booted (easy for them), ladies in cocktail dresses. I’ll be skint after Christmas and need something cheap but ok enough for one wear. I’m dumpy size 12 and short. Decent boobs in a bra; disastrous without. Big tummy. Can anything be done or should I get room service and stay in pjs?!