a "vamp" in training, an adolescent to young adult aged girl/young woman who is seductive who uses her physical attractiveness and unparalleled charm for manipulation of others, usually boys/men
the opposite of a goodie two-shoed Mary Sue
Blair Waldorff in Gossip Girl is a baby vamp, and other such characters like her are baby vamps too
a word you use to define your vamp s/o
Josh: bro what is your girlfriend
Hase: thats my vamp baby