GUESS high waisted mom jeans

These are my favourite pair of jeans but sadly they don’t fit the same anymore. I feel like the size on the tag is wrong, I’m a size 9 and they fit snugly, so I’d say it’s a size 8. Brand: Guess Colour: light wash Condition: Good, last two photos show the flaws (a stain top left corner at the back (not sure if it comes out or not) and a bit of fraying around the pocket but nothing major) Type of fit: straight leg, mom jean, high waisted