I'm 5'1 and about 120lbs. I normally wear a size 4 so I bought these in a 4. The waist fit with only minimal looseness that I would have to wear a belt. I normally wear a belt anyway due to how my hip to thigh ratio is, so that didn't bother me much. The problem is if you're under 5'9, the pants are EXTREMELY long. I'm used to having to roll up the bottom of my pants but these were ridiculously long. I had to roll them use at least 4 times to get them to a point where I can walk without tripping on my own feet. They're also pretty baggy everywhere else. I know these are straight jeans and not skinny jeans, but they were not flattering at all. I probably could of fit a size down, but that didn't even matter since they're so long.If you're tall and have thick thighs, these pants might work for you. But if you're on the shorter side, avoid these pants at all cost.