How do I get thick legs and muscle?

Sugar100
How do I get thick legs and muscle?
I know I need gain weight I’m still on Slim side. I’m 92lbs and trying gain soon by 3 months to 100lbs. I was born with long skinny arms and chicken legs. But I want have sexy legs now. I see girls have muscle stick out on their thighs but how do they do that? i barley have 3 weeks working out consistently at home for 4 days a wk. my legs don’t change just my arms got bigger. the hamstrings are flabby loose skin no muscle. Only the front part of leg is hard. But I don’t have that muscle sticking out on thighs yet. Any help? I have little hunger so food is forced it’s hard eat a lot. Feels like a chore.
How do I get thick legs and muscle?
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