If you're shy about showing your figure (or lack thereof), maybe try a swimdress. They cover everything, thankfully... and there are quite a lot of them to choose from. They're not quite as frumpy as the skirted suits that my mom used to wear.
I did buy a suit this year (knew I had to, and HATE to shop for these)... I started my search online, going to the websites of stores in my area, so that I could get an idea of which store(s) might have something like what I wanted.
I would up going to Penneys. They had about four suits that I liked the look of, and my 13-year-old helped me make the final choice. (She actually has a figure. I lost mine some time back...)