I'm losing weight but my biceps are growing bigger!!!

Can somebody explain me way. I hate my biceps since I was a kid especially when I entered puberty, so do I hate my shoulders because they don't look as feminine. So I began to do weight losing diet and I did lose around 5-6kg It made my hips larger ;D however for some reason my biceps grew D;. Can somebody explain to me why?? I'm loosing my mind!!!!!