Baby blue high neck dress

Utterly gorgeous baby blue dress. Bought it for a formal so only wore once. Forget what site it was from as it was a while ago but it was an Australian store. Criss cross straps in back, lacy detail, zip closure. Such a beautiful dress I wish I had another occasion to wear it to. Small stain in front pictured but barely noticeable and if dry cleaned would definitely come out. Says size 6 but I think this is australian size? Will fit a 0