Rihanna - looked great when she was in her mid 20s, now the skin bleaching, expensive but shit clothes, excessive coke taking and badly done tattoos put me more in mind of king's cross beggars. Also let's not forget her talents are greatly exaggerated especially compared to the likes of her contemporaries Sia and fka twigs.
Scarlett Johansson - she's not ageing well and the weight loss or athletic figure doesn't really look right on her, I know she's always been thin and I don't mind gym fit with big tits, but I don't know. Not too mention her self righteous arrogant attitude. Also I think people can see just what a mediocre actress she is, with highly talented directors making her look better than she is. In both ghost world and lost in translation you can see her get acted off the screen by everyone else especially the males.