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I usually wear XS or S, ordered M as per measurements' table. The straps dug into my shoulders uncomfortably while the bottom band was so loose, the bra offers no support. I can't wear the bra: it doesn't do its job. The shops return policy is quite restrictive, had to pay for returns myself (£5.95 for it's an international shipment to Germany) and they'll deduct a restocking fee of 20% from the item's price as per an e-mail they sent. Quite a dear lesson to learn not to buy clothes online. If they actually do refund me (I forgot to take the receipt in the post office as I was distracted), I've wasted £10 just to try something on that I couldn't wear. The customer service, however, is prompt and forthcoming.