My Killer Client.

Christa Bright's an aspiring stylist who has an instant connection with new client Kat Niven, a woman who needs help gaining confidence. When Kat's admiration for Christa turns into obsession, Christa begins to get suspicious. She soon discovers that Kat's her fiancé's ex-gf and she's trying to become Christa in a ploy to win Jack back for good.