ASOS jaded rose high waist, wide leg pants / trousers in white NWT

These were way too small for me! I couldn’t even zip them up all the way. I am a size 25 in jeans. These say size UK 6, but I’m not sure what size that is in US. Two?0? Also, these are very thin material, tried to photograph my hand through the pants so you could see, they are pretty see-through. Would definitely need a nude thong while wearing. Also, just noticed kind of a weird Mark. It’s very subtle I didn’t notice it first, it’s photographed in the last photo kind of circular looking. Haven’t tried cleaning it.