I wanted to wear a 40s/50s vintage red satin dress that I have to my brother's wedding this summer, but it doesn't fit. I am trying to slim down until August (and I really hate being my current size), but then Talbot's decided to have a 30%off in-store sale (only tomorrow) and I found this dress. I think I want this dress anyway, but do I get it on sale for frumpy-chubby size 12 (I think) me or do I hold out for 3 more months and then buy a dress at my then size? Anybody who has had similar issues about shopping and changing sizes?

the dress: in Geranium

http://www.talbots.com/online/.....pSelection