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I really like this, and it is an excellent price and appears of good quality, but it is sized pretty small in my opinion. My daughter turned 7 months old yesterday and, while she is fairly tall (26.7"), she is not especially chunky, so I thought a size 12 months would be fit her fine. Unfortunately, however, the tank top simply isn't big enough on her (it was very tight) and the straps are far too long, so the overall fit was very poor and my daughter will not be able to wear this. I would say a more appropriate sizing for this piece would be 6-9 months (although, the straps would likely be too long for a child of that age.)