I've always found that when you put something on, you know. There's a...a sense of how it drapes and how it falls, whether it does so with your body or against it.

And of course mirrors in the dressing rooms help. But I'd imagine we want something in a pastel or pale color, with flow. You're very slim, something formfitting would hang awkwardly on you. Something with layers and loose, flowing fabric would help create an illusion of...a more robust form, we'll say.

[Because to simply point out 'it will make you look less sickly and wan' is hardly polite.]