The "young girl" in the picture was in her mid-40's when it was taken. I'm glad you still consider that young!
I agree that young girls should not only rely on their beauty, but nor should they fail to exploit it while they can. I just disagree that by pursuing other things (like an education, for instance) they are "earning" it anymore than otherwise. They didn't earn their beauty, but they can cultivate it and exploit it. And they likewise didn't earn their intellectual aptitude, but they can do the same with it. Both are wise and equally "worthy".
Well, she looks young in the picture - I didn't zoom in on it :)
I wouldn't advise a girl to exploit her beauty.
It creates a warped vision of reality.
It also affects men and their perception of women.
But that's just my opinion and I'm not telling anybody what to do, unless maybe if someone asked me.