mogwai_do

It's hard when you're a non-standard fit, but there's always the option of having things tailored to fit you, which as a shorty, is probably going to be your best way of getting a good fit. As for the 'blockiness' problem (which I completely empathise with - even when I was thin I never had a waist) you could try experimenting with belts of different widths (try a really narrow one) to give you a bit more shape with a dress. I really like this look as a dress option for work, with a shorter jacket or cardigan it looks great.