My muggle boyfriend has invited me to go to his older brother's wedding as his 'add one' (I believe that's what he said) and I'm not sure what I should be wearing. He told me that he isn't ready for them to know that I'm a wizard and I need to blend in. I asked him to help me find an outfit and he said to just wear 'a nice suit'. A nice suit of what? I'm very confused, and I don't want to embarrass him in front of his parents because they already don't like me much. Please help! Thank you.