I'm taking suggestions

So next Saturday, Phil and I go to a Murder Mystery party and Leigh Ann and Tim's house. It is a costume party and I am not sure what I'll be yet. I am taking suggestions but have a few rules! LOL!

• I've had two babies via c-section and my eating habits haven't been that great this year. It can't be anything that will be tight in the middle or bare midriff.
• It had to be somewhat comfortable...not some big contraption that I can't sit down in or can't quit running into people in.
• it can't be ridiculously expensive.