Flying on Kim Air is a bit like being Spider-Man in the sense that “with great power comes great responsibility.”…and those rules are strictly enforced.

In case you didn’t know, Kim Air is Kim Kardashian’s luxurious, customized G650ER aircraft.

Kardashian flaunted the $150 million jet on an episode of her family’s Hulu series, The Kardashians, in June, giving fans an MTV Cribs-style tour while raving about the plane’s lavish decor (all cashmere, for the record), and ‘joked’ about the strict rules for passengers.

“Don’t breathe; don’t touch a thing,” she said.

“I’m gonna do no shoes on the plane and get custom Skims slippers.

“Wouldn’t it be so cute if I made custom Skims in this colour, like pyjamas, socks, and blankets and slippers?”

All air-quote-joking aside, Kardashian is very serious about the rules her famous friends and family must follow if they want to hitch a ride on Kim Air.

In this week’s episode of The Kardashians, Kim spoke with her sister, Kendall Jenner, before their trip to Milan for a Prada fashion show. When Jenner mentioned her plans to “get a quick spray tan” before takeoff, Kardashian was less than pleased and immediately questioned the timeline.

“It’s a three-hour one so I sit in it for three hours and then shower it off,” Jenner explained.

At this point, the world was reminded that nothing comes between Kim K and her pristine cashmere.

“Have you seen the cashmere seats?” Kardashian asked Jenner.

“You cannot get your spray tan on my cashmere seats.”

“Usually planes are dark with lighter leather—mine, I had custom all light wood,” Kardashian explained during the official Kim Air tour.

“I had a bathroom put in the front, a bathroom in the back.

Every seat has its own phone charger. The best, most exciting part of the plane is, it’s all cashmere. Cashmere ceilings, pillows, headrests.

“I feel like I’m doing an MTV Cribs for planes, ugh, what a dream!”