Don't get between a Momma bear and her cub!!
Hilary Duff's mom went apeshit when paparazzi got too close to her car to wish Hilary a "Happy Birthday."
When the photogs followed them to sister Haylie Duff's home and walked up the driveway, Momma Duff went into protective mode and got out of the car and screamed at them to get off of private property, calling them "jerks."
Yo tell 'em, gurl!