I got 6-12m ocean color for my 4 month old son, and I was so excited about it because of the ratings on it and thought this size would fit him for some time...well...
My son is smaller than most children his age (about 9/10 lbs.), and this STILL didn't fit him! I read other reviews that said this didn't fit their children in the body of it (torso area) but even the feetsies didn't fit him, they were way too short for his feet!!
So this product gets an extra star for it being cute and well made and everything. So I guess if you have a child on the smaller side (smaller then 9 or 10 lbs.) then this is something you'll probably love because it does run on the smaller size. Good luck girls, hope this helps. But just be mind full of the seller (Cute Little Clothes).