LOS ANGELES — Kendall Jenner testified Thursday at the trial of a man accused of stalking her that she was terrified when he followed her up the driveway of her Hollywood Hills home and repeatedly knocked on the window of her car.

The 20-year-old model and reality TV star used her hands to illustrate how she made frantic phone calls to friends after locking the doors and watching Shavaughn McKenzie until help arrived.

“I’ve never been so scared in my life,” Jenner told the Los Angeles jury hearing the case against McKenzie.

Jenner also said she recognized McKenzie as the same person who had accosted her twice while she was driving outside a condo she owned in Westwood.

Jenner kept her composure through nearly an hour of testimony about McKenzie, 25, who was arrested in August outside her home and charged with misdemeanor stalking and trespassing. He could face up to six months in jail if convicted of either charge.

McKenzie is a transient from Florida who has several trespassing convictions unrelated to Jenner.

McKenzie’s attorney Taylor Shramo told jurors during opening statements Wednesday that his client has a severe mental disorder and was unarmed and simply trying to talk to the model.

Jenner said she first spotted McKenzie sitting in a street outside her Hollywood Hills home and was suspicious as she pulled into her winding, tree-lined driveway and watched the 13-foot-tall gate close behind her.

McKenzie somehow slipped through and wasn’t noticed until Jenner prepared to leave the car, she testified.