Women's sizes and weight

I am 5 foot 10, 209lbs and a size 16. When I was 239 I was still a size 16. I have no idea how sizing works these days. I could NEVER shop online for clothing.

ready made clothing doesn't have a sizing standard at least not in the US. I sew a lot of my own clothing. Patterns use an old standard of sizing that hasn't changed one bit over the decades. Most pattern companies don't start at size 0. I still have to remind myself to ignore the sizing on the pattern and instead focus on the measurements for the sizes and the finished garment. I started sewing my own clothing because I felt the ready made clothes were making me looking heavier and frumpier. By making my own items I can adjust the proportions and move darts and seams for a more flattering fit.

it seriously all varies. your height, body frame size, and where you carry your weight all depends. when i was younger and 175 i was a size 14. then i gained and lost a bunch of weight and was that weight again, only this time i did it right and exercised and ate right, and i was a size 10-12. there is no predicting sizes unfortunately. people who are my weight are normally in the 20's and i'm a 16. it makes no sense right?

ready made clothing doesn't have a sizing standard at least not in the US. I sew a lot of my own clothing. Patterns use an old standard of sizing that hasn't changed one bit over the decades. Most pattern companies don't start at size 0. I still have to remind myself to ignore the sizing on the pattern and instead focus on the measurements for the sizes and the finished garment. I started sewing my own clothing because I felt the ready made clothes were making me looking heavier and frumpier. By making my own items I can adjust the proportions and move darts and seams for a more flattering fit.

You are lucky to have time and talent to do this I tried this back in high school....and I looked even frumpier, lol!

You bring up a good point, although it may have been mentioned earlier. Vanity sizing! It's awful.

I'm 5'4 and weigh anywhere from 220-230. I currently have pants ranging from size 16-24 that all fit and shirts from M-XXL. I do have wise hips and a larger butt that throws off my pants/skirt size. Even at 150 pounds I was still wearing size 12/14 on average.

I'm a UK 8 / US 4 / Small at 1.65m (5'5") and about 63kg (somewhere between 135-140lbs). I sometimes have to wear a UK 6 because the size 8 version looks silly on me. When I was 68kg for a while (about 150lbs), I usually wore a UK 10 (US 6 but still borderline S) and at my highest of 71 or 72kg, I was UK 10-12 / M. So for me, every 5kg / 10-15lbs usually equates to a dress size.
However, it definitely varies between different people just like many shops have different standards for the same size. I think it's a lot more to do with your bone structure, body composition and body type than weight. If it was all down to weight, I doubt I'd fit into 'small' clothes.

As has been said, you can't predict clothing size purely by weight.

I'm 5'9" and at 225-235 I was a size 18. Now I'm 206 and a 14. At 195 I'm a 12.
The smallest I have ever been is a size 6 at around 152. I never thought I would be able to be that small, either, as I was overweight for most of my youth. I think I'd be happy at 160 for the rest of my life, and could maintain that without too much effort.

I want to shop where you buy clothes!!!