One of FH's close cousins has NO ability to dress for formal occasions. Weddings, funerals, family parties, etc. he will always wear ripped jeans, a t shirt and a baseball cap. Is there a nice way to tell him that our wedding is formal and that we would like to see at least a button down shirt and slacks??! FH agrees with me and has talked to his parents about talking to the cousin but the cousin has been told this in the past and still continues to dress like this at formal occasions! I really don't want an outfit that looks like house painting clothes in our formal pictures!