I don't think that the colors of the bridesmaid dresses have to match the groomsmen vest. That is what I was going to do at first but I actually haev the girls wear champange dresses and the guys wearing pink ties/vest. (Dark pink not baby pink) My brother is a goof ball and was totally all about wearing pink. I am surprised he didn't convience his wife to do that for their wedding! But I dont' think they have to be the same!