Personally I think Chloe's worn some gorgeous outfits. Dreadful housemate but has worn some lovely clothes and always looks great. Much more individual than Farrah who, as far as I can tell, mostly wears black or white, although her entry dress was stunning (as was Chloe's).
ETA: Personally I prefer to see them dressed casually in the house, as if they were at home - I don't walk around home in my best gear, I slob about and I want to see them slob about, I think those who dress up all day in the BB house are using it as a shield, an armour, to keep their guard up and play the character they have chosen to be on the show.