The invitation made no mention of black tie. It is a yacht sailing from NYC. Also the bride and groom are both Harvard Business School grads. However, they're both incredibly laid back, and most of their friends and family members are the same way. I am at a loss as to what to wear. Everyone says it's not bad to look too stylish. But I certainly don't want to steal the groom's thunder if you know what I mean. I also do not like to stand out too much from the crowd.