Why is my right leg bigger than the other (see pic)?

My right leg (left side in the pic) is a lot bigger than the other and after losing 80 lbs it's still like that, how can I fix it? I thought it was fat when I was overweight but it seems it just doesn't go away
Why is my right leg bigger than the other (see pic)?
Why is my right leg bigger than the other (see pic)?
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