Thanks for the enthuze! I didn't actually use a pattern, but let's see what I can do...
This is knit flat, for about a 32 waist and a 34 bust, so adjust as needed.
So the basic idea was:
Needles size 5, 9 and 10.5 US
About 2 6oz. skeins of Caron Simply Soft Brites!, Blue Mint
on #10.5 needles
Do 2x2 ribbing for 6 rows
Stockinette stitch for ~9 inches (stop roughly where the bottom of your boobs would be)
Switch to #9 needles
Stockinette stitch for 4-5 more inches
2x2 ribbing for 6 more rows
Same as for back, but cast on 68 (I did 72, but it was a little bit too big)
Then mattress stitch up the sides (awesome explanatory video here )
On #5 needles
Garter stitch for 8 rows
Do a button hole (Great video here )
Garter stitch until its the length you want it (make sure to account for stretching!)
Another button hole
Garter stitch 7
Then I just roughly sewed four buttons on the inside of the shirt, where i wanted to attach the straps, and voila!
You'll probably have extra yarn at the end...I made a matching scarf!
I hope this helps!