I have the linen short sleeve dress, it's the dark beige color. I *think* it's 12m, it might be 18m. NAKing right now but I can check if you like. My DD's worn it twice. It was too big when I got it (2 summers ago) and then it got "lost" in the closet until this summer and it's just a little small on her now. :\
Email me if you are at all interested, my PM box fills too quickly.