When you select the clothing, are there body parts to the top? For example: chest, collar? If so, you can try adjusting the parameter dials for those parts of the outfit.

If there are no morphs in the clothing, there are programs that you can buy that can add the body morphs to the clothing. 

"It is good to see ourselves as others see us. Try as we may, we are never
able to know ourselves fully as we are, especially the evil side of us.
This we can do only if we are not angry with our critics but will take in good
heart whatever they might have to say." - Ghandi