Yellowstone superfan Jennifer Lopez enjoys a drink with Kevin Costner in Aspen

She’s one of the biggest celebrity fans of the hit Western crime series Yellowstone.

And Jennifer Lopez had a major geek out moment on Friday evening when she got to hang out with the show’s since-departed star, Kevin Costner.

Jennifer was spotted earlier in the evening as she and her child Emme, 16, went shopping while dressed in their most stylish western-wear looks.

She had been spotted in the celebrity destination city days earlier as she geared up to celebrate Christmas there with her close friends and family, including her mother Guadalupe and sister Lynda Lopez.

Getting to spend time the star of one of her favorite shows was likely a treat for Jennifer, but her adoration for the critically dismissed series was reported to have ‘disturbed’ her estranged husband Ben Affleck during their marriage.