Jennifer Aniston is a Fur Boutique Babe

Jennifer Aniston stops in for a facial at the Cristina Radu European Skin Care spa in Beverly Hills, Calif., on Thursday.

Later in the day, Aniston, 39, was seen visiting her Brillstein-Grey Entertainment manager in Beverly Hills.

Regarding the breakup with John Mayer, a friend insists it was, “Jen who decided to move on.”

“She is very fond of John and has thought he might be the one. She finds him funny, sexy and very talented. … Plus he understands all the aspects of living in a fishbowl. But in the final analysis, she just got tired of his roving eye,” a friend told the Chicago Sun-Times.

Apparently, Aniston gave Mayer a “three strikes and you’re out” ultimatum — after learning about his “quickie” flings with a cocktail waitress and a promoter’s assistant for his concert tour.