Firstly, it is always wise to avoid figure-hugging clothes. Plus size ladies may think wearing tight-fitting clothing will look smaller and therefore they will look thinner - this, unfortunately, is not the case. In fact, it can have the complete opposite effect. Tight clothes will highlight fatter areas making a fuller figure more obvious. It is better to opt for looser fitting garments; it is important to note that looking fashionable does not have to be at the expense of comfort.
For many years fashion experts have highlighted the benefits of vertical and horizontal stripes in accentuating a person's figure. This is really does work - avoid horizontal stripes and embrace anything with vertical stripes, these give the impression of a slimmer figure.
Clothes with length which minimise the amount of exposed flesh are also friends of the larger lady. This lets the material flow without any fat being on view and spoiling the image somewhat.
It is important to get fashion right, but comfort and how you feel in it is just as important, therefore balancing both is the way forward.