This is the bodice from a 1960s pattern - McCalls 6779 - spliced onto a TNT bottom. I use a lot of vintage patterns and modern fabrics, so a lot of times my projects don't look very vintage, but I think the 60s palette of the fabric (especially the avocado green) makes this one look very 1960s! The fabric Denyse Schmidt County Fair light weight canvas in pear - Fabric.com has it right now.
I'm also finishing up a 1920s flapper dress for a costumed picnic - look for it on my blog soon!