How do I grow calves & get muscle on legs & gain weight fast help?

Sugar100
How do I grow calves & get muscle on legs & gain weight fast help?
This is me. First pic I was around 75lbs. I was sick last year with anxiety & it made me chock on food so I didn’t eat. Second pic was beginning of this year I was 85lbs. Third pic was last wk at 92lbs. I was 93 but went down to 92. My thighs have more fat but calves r tiny. I want be 100 lbs fast so I can see growth In my legs have sexy legs. This bottom pic is a fitness girl & I want her legs. But she is about 115lbs or more. Can I gain weight and get msucle same time? On my knee area I have no fat , so it looks weird, once I gain weight my whole legs will be fat and have muscle gains too. I need help what I can do. It’s hard gain weight. She eats really light food so I’m confused how she didn’t lose weight? She just says fish rice , no fat at all, oatmeal , if I eat all that I would shed pounds. I’m eating heavy to gain a lb in 2 wks. My body loses weight easily.
How do I grow calves & get muscle on legs & gain weight fast help?
How do I grow calves & get muscle on legs & gain weight fast help?
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