Hmmmm, the only thing i can suggest is to visit the site and have a look in your area for some shops that might be able to help. Some of the shops have websites so you can check out what they sell. May be bit of a longshot.....but i always try to help when i can!
I know plenty of good sites that sell 'proper' corsets (and if you ever want a corset which is needed for a deadline check out ) but unfortunately they wouldnt arrive by tuesday!
Failing that i could send you one of mine by courier pigeon as i am the same size as you and have plenty to choose from! lol
Sexlightened