dreamababy, the dress(top) my girl wearing is size 12M. It's elastics chest (or she called it smock chest) with adjustable strip.
Initially, I asked her any recommendation for full month apparel for bb G coz I realised i too kiasu, bought all the big big size, end up wear like sarung. Then she recommended this. I bought it coz she told me can wear the top as dress for full month, coz is adjustable shoulder strip. So, when I get it, i understood why she say so, coz the cutting is considered smaller. I would say your baby should be able to fit now for just the top. Like what my bb is wearing and with pampers at the bottom. I let her wear when we are going out, or when there is visitor, coz want to appear nice and cute mah. If no one coming to visit, then just let her wear the "ko ko" passed on one or romper, seems more comfy to wear at home. But sometime I will still dress her just to make myself happy to be at home with the 4 walls and her. I let her wear this also partially her neck is red as too hard to air her neck.
It can wear till 12M (normal bb size la) coz seems mine is giant size, coz bb will grow taller, then you can adjust the shoulder strip to put to lower to adjust the length of dress, and when grow even taller, convert the dress to top later and put on the pant lo. I believe it will be nice la, especially when they start to stand or can hold at armpit. For 12.50, I think is worth la, wear 12 times, 1 time $1, I feel worth lo. Only thing is need to iron coz I dry them in my drier.