Jada Pinkett dresses in pink to honour her surname and to teach us how a woman can use elements of fashion to look taller and slimmer. Of course Jada is also wearing very high heels with platforms that make her look much taller. Look Jada is wearing pants that are probably longer than the length of her legs. The fact that she wears top and bottom in the same colour makes her look thinner.
In this picture Hilary Duff is not very much worried about how her body shape, she is concerned about comfort but we can clearle see that those pants just folded like that make her body look shorter. Probably if we could catch the picture where she is wearing the short boots that she is holding in her hand we could perceive the difference.
Cheryl wears the same colour shoes, so she makes her legs look longer and her figure slimmer. The UK singer is also wearing black what is a slimming colour.