They are not being cricidized for that!
Those girls have the luxury of living in the finest house in this country, they go to the best schools, have unlimited free vacations, and have scores of servants attending to their every need.
Yet they're not happy. Look at their faces. The older one never smiles. She makes a lot of faces though. She always looks like she has total distain for those around her. She apparently sees no need to dress appropriately for a White House occasion.
One usually learns these things from one's parents. Given Michelle's lack of fashion sense, it's not surprising that the daughters wouldn't have any, either.
Maybe they are just not happy that their father is such an azzhole. You think?