Help! How to cut off a friendship appropriately

I've had this friend who is a girl. We've been friends do about 7 years. After being friends for about 4 years she turned into someone that i do not want to be friends with. She is also one of my bridesmaids, I'm getting hitched in October. Every time she's around we have to do everything she wants and i am hospitable towards my guests don't get me wrong, but it's exhausting being her friend because I have to entertain her the entire time she's over. Plus, she grew up in an upper middle class house hold so she doesn't quite understand that sometimes I have to stay home instead of go out because I have priorities. Anyways I'm a grown ass woman and we've been friends for awhile but I need to cut the tie. Help!