This is a very pretty, delicate, comfortable dress. i think it fits tts - maybe even a little large. i got the ps which is my usual size and it fit perfectly.
the only complaint i have is that the photo is misleading. on the dress i received there was nothing to hook the buttons into (no loops as in the photo) so the whole front of the dress has to be unbuttoned. i wish i was able to button 1 or 2 as in the photo.