Here's what consumers have asked with answers from OKdress.co.uk staff and previous consumers.
No you can't. I've been trying for weeks because they sent me a dress 6 inches too short and it was covered in stains. They are refusing to give me my money back even though I've sent pictures for evidence. They are very rude and told me it's no good to them and there's nothing wrong with it! Horrible company
The dresses I ordered took over 2 weeks to arrive, and I was gutted when they turned up wrong. I'd advise having a back up plan just incase
I used the online chat to keep a trace on my order. No problems and was delivered on time and dresses were good
Honestly it's not worth the risk, yes they're cheaper and you're saving money but they're done to a really poor standard - and the ones I ordered were just a plain satin material, no fancy business. I've emailed their customer service frequently and even after they eventually said they would compensate me 10% of what I spent I've since received nothing and now don't get replys to my emails at all. My honest opinion is you'll more likely than not need to pay for alterations for the dress as well as the dress price and shipping, if that works out cheaper for you than getting another dress than it might work but it didn't work for me.