My Brother's Girlfriend is ghetto

I can't stand my brother's girlfriend she is so ghetto, straight hood.My Family want to come to my house this year for thanksgiving but I don't want her to come, because she might embarrass me in front of my other guest (like my friends)and mess up the thanksgiving dinner.Should I tell my brother I don't want her to come? or should I try to make the best of it? And put up with her since she is dating my brother.