Movie hunk Morris Chestnut sparked a medical emergency on the set of his latest film The Perfect Holiday when a fan abandoned her baby in the back of a car to get close to the handsome actor.

Chestnut's co-star Gabrielle Union was stunned when the young New Jersey mom dashed towards the actor, leaving her tot to roll off the backseat and into the street.

She says, "Morris walks out of this building and you hear this scream, and then, 'Beep, beep, beep, thud!' This woman had been changing her baby's diaper in the back seat of the car. She sees Morris, leaves the baby on the edge of the seat and starts running after Morris. The baby rolls out of the car and we had to call the ambulance. She literally lost her mind. She was with an infant in pampers and just loses it."