Yes, I have seen Sisterhooves Social. Rarity's mother seems to be more of a middle-upper class type of pony, and her father more of a farmer. Where I'm confused, is how she became so interested in high class society. If her parents do in fact live in Ponyville, then what could their roles be? Her mother doesn't seem like the type to have been raised in Ponyville, so I'm thinking that she must have met Rarity's father from visiting town, and later moved there. Still, if Rarity lived in Ponyville all of her life (this is based on her father living in Ponyville his whole life), then how does she have the mannerism of a Canterlot / Manehattan pony?
This does make sense to me, she probably visited Canterlot with her parents after she found out what her special talent was. Noting how classy the ponies were in Canterlot, that's when she probably became fascinated with that type of lifestyle.