Opinions? Size down at least one size. You will want these to fit snug in the waist to begin as they will stretch a little. With that much room in the waist already the excess material will bunch up even if you wear a belt. The ST is a pretty slim fit so when sized properly they will fit slim through the thighs. If you want a more relaxed fit through the thighs (like in your pictures), you might consider the SL instead of the ST.