How do I want to portray diversity?

Within my final images obviously I would like to portray a slight hint of diversity, however I wouldn't like to be too obvious with this concept. Throughout my blog and from now I am referencing to body image within the media and the fact that there is a certain line between being too thin and portraying the perfect body. However what is the perfect body? Many people may think different but I feel the ideal body is healthy. And how do you define healthy? Many opinions will differ. 

However, I will never understand why they portray a size 14/16 as healthy? Is that not promoting slight obesity? As in some high street shops they are now using size 14-16 mannequins. I know they are trying to show a diverse range of sizes, but I feel maybe that is maybe sometimes verging on unhealthy. 

BUT woman do need the comfort and realisation that skinny isn't the only way in fashion.

So, when discussing diversity within body image, many will suddenly jump to curvier, bigger women. However, being skinnier is still diverse. Many young girls can't help being petite and skinny. So, therefore having a small, petite, skinnier girl in general on the catwalk isn't always wrong.