Hilary Duff acted like a real “heel” during a recent confrontation with her now former assistant.

Bauer-Griffin

The former Disney star, 22, reportedly fired the assistant after the flack went on an errand to pick up Hilary’s new $650 Christian Louboutins off special order only to return with the wrong shoes! Apparently, someone at the designer’s ritzy New York flagship store sent Hilary’s right-hand off with the wrong box. But that was no consolation to the Gossip Girl guest star, who spies say blew her top on the flunky after learning of the foul-footed mixup.

Star Magazine reports: “She was livid. She parted with the assistant on the spot and hasn’t spoken to her since.”