The new mom to now 7-month-old daughter North West was relaxing in the kitchen with her younger siblings, Khloe Kardashian and Rob, when she started lactating on Sunday's show.
"Your boob is like, leaking out of control," Khloe told the breastfeeding champion. "It's like, a water fountain." Kanye West's fiancee, who was wearing a low-cut, feather gray T-shirt, was dripping breast milk on one side through her top. The unfazed star calmly responded by readjusting her famous assets before the cameras -- stuffing her bra with tissues to remedy the leakage.
Her shocked brother, however, was still in utter disbelief over the natural side effects of breastfeeding: "What the f---?" he said to his big sis. "That weirds me out for real," the 26-year-old sock designer continued as he walked out of the room.
The 33-year-old reality star was hardly offended by his reaction and bursted into laughter over the incident. "Okay, sorry. Sorry guys," she said.
(As Us Weekly previously reported, Kim has been settling into motherhood naturally after giving birth to her daughter last June. "Breastfeeding is working for her and she already feels she has bonded with Nori," a source told Us. Another confidant added, "Kim is breastfeeding constantly. She's loving it.")
Tell Us: What do you think of the entire incident?