I purchased a vintage butterfly printed silk dress, from Vinnies in Cranbourne. It was a size 16, and I am a size 8.
Before: Loving that fabric with pretty butterflies and ladybirds... but the dress itself was actually really frumpy, boring, and an odd shape, I doubt very much it would have fit a size 16, probably a 10 top, and 14 hip.
During: I used a dress from my wardrobe as a template to cut around...
...and used the excess fabric to make a ruffle on the shoulder:
The belt is from another op shop, and cost 50c, I used more excess material for a tie around the middle.
The frumpy vintage dress, turned into one fit for the races... except I'm not going to the races... but it will do for a birthday party I am going to at the end of the month.