Dang it, I did try something similar but I felt it made me look wider. I ended up exchanging the dress for a smaller size and gave it to my daughter. She is a rectangle, i'm a pear. It does look fantastic on her. Then again, everything looks fantastic when you're 18:)
I never buy from Boden, do they have free shipping/ returns? I'd say give it a shot, you never know. I try everything under the sun. Worst case scenario, you get a chuckle out of it.