VICTORIA Beckham is off to a Rocky Mountain start as a guest judge on the first round of “American Idol” auditions in the post-Paula Abdul era.

The former Spice Girl arrived at a downtown Denver hotel yesterday as scores of onlookers crowded against rope barriers.

Fox said Beckham and Katy Perry would be guest judges in Abdul’s place. But an “Idol” spokeswoman declined to say whether Beckham was in Denver yesterday to be a judge, and Perry was nowhere to be seen.

Abdul announced this week she was leaving “Idol.”