Bootcut trousers are the best cut for plus-sizes. When pants taper in at the ankle, they can have a disproportionate effect on your midsection, making it look fuller.
Instead, opt for the straight, sleek line of a bootcut. It is also important not to go too baggy with trousers; this will only make you look bigger.
Get pants tailored to fit properly to create a smooth contour. For plus-sizes with a thicker midsection, wear a thinner belt with trousers to avoid drawing attention to your midsection.