pick-me girl

Etymology
From the phrase pick me + girl, the implication being that such women, like someone pleading "pick me!", are desperate to be chosen over their putative competition.

Noun

 * 1)  A woman who asserts that she is unlike (and sometimes better than) most other women, in order to gain attention, approval, or validation from men.
 * °N, °W
 * °N, °W