[Coffee.]

Personally, I don't wear jumpers because I don't have the body for them. :P Spanx, or these underwear that you have, can't fix that my height/curves are going to make me look large in a jumper, or many other types of clothing made for 5'8 girls who weight as much as I did in middle school. You might be able to break up your body with a belt, or wear a shirt or top on the top of the jumper. Other accessories may be able to distract against body consciousness. I'd have to see it more to get an idea of "quick fixes." But remember that while we may think we look pregnant, others may believe we look awesome. It may be all in your head.