My dd is ten, tall, but very thin and small framed- on most clothing measurement charts she is like a five year old, apart from her height. I have always bought her Petit Bateau swimsuits as they've been the only ones that fitted, but this year the age 10 is a bit short in the body but a bit too wide, and the age 12 would be very wide. Gap is huge on her. I ordered a crewcuts swimsuit from the States, just because it was pretty, but it is really baggy, and again, not quite long enough either. So are there any makes that come up very slim? Lands End do a slim swimsuit, but only in the US range which would be a pain if it doesn't fit, (she has had them before and they have been ok though, so i will try that as a last resort). i'm just hoping there is something in the UK. I sometimes take in skirts etc for her, but a swimming costume is more tricky! She needs a costume for school swimming, they don't allow bikinis.