I'm 15 And I Have A Slight Knock Knee Problem.

I'm 15 and I have a slight knock knee problem. Its not severe, but I hate it. When I stand with my knees together, feet straight forward, my feet are about 3-4 inches apart. I know it's not bad but still. It's ruining what I want to wear. I'm 5'4 and weigh 162 pounds. If I lose weight, will they automatically straighten? Or at least appear straighter? I don't really want surgery. It sounds painful and expensive. And I don't want to take any risks. I heard that knock knees are cause by weak abductors. Does that mean I should do abductor strengthening exercises? Or would I be wasting my time? Should I get a knee brace? See a doctor? Help please? Thanks