Husbands friends wife is a bitch & I can’t stand her

PLEASE READ!! Ok so my husband has this friend who I’m not very fond of to begin with. Granted I’m pretty sure this happens in every relationship so that’s not my concern. My concern here is my husbands friends wife. She is literally the most condescending, conceited, rude, bitchy/cunty, ridiculous, entitled individual. Just the way she speaks to people like she speaks down to them almost... like I said condescending to no end. Literally is so stuck up. “My parents were business people so we always dressed nice” okay and that matters to me because??? Just because your family has money does not mean you can run around being an entitled bitch. I literally can’t stand the sound of her voice or any dumb shit that comes out of her mouth. I already put up with his friend I don’t like and this is just really pushing me over the edge... & on top of that we’re just completely different people like I’m chill and relaxed and down for whatever just like vibing and shit and she is the most uptight, annoying person I have ever met. The next time I see her I want to tell her off but I know that’s probably not right so what other alternatives do I have? Not to mention my husband is UNFORTUNATELY his best man for his wedding too. I’m not about this couple to begin with and quite honestly I want nothing to do with their wedding day. Should I just not go? I honest to god can’t stand this couple. HELP?!