The Kardashian clan held a huge bash for their 85-year-old grandmother, and if they want a shot at her turning 86 ... they should tell her that North West's nose ring is fake.
The party went down over the weekend for Grandma MJ's 85th birthday, and of course featured all the typical KarJenner party bells and whistles ... including a photo booth.
Sandwiched between her cousins, Tru and Penelope, North's nose bling can be seen glittering in the black and white photo.
KhloÃ© and Kourtney were also seen in the photos, but seemed unfazed by the nose ring.
Luckily, Kim got a hold of the situation rather quickly and posted a message to trolling fans on her IG account.
"Fake nose ring alert!!!!" the star wrote ... possibly getting well ahead of any nosey nonsense.
She also took some photos of herself with North, and clearly the 6-year-old felt like a grown up with her new hardware.
In less controversial photos, Kendall Jenner and Kylie Jenner both attended MJ's party and posed for pics with their famous Momager.
Kendall and Kylie both looked flawless, as usual, and smiled into the camera while making kissy faces.
Lots of photos from the event were posted, which showed the entire family -- minus Rob --- in attendance for MJ's big day.
During the festivities, MJ was treated to a beautifully decorated, powder blue table setting, and all the cake she could eat.
MJ was married to Kris' father, Robert Houghton, until 1962. The two later separated, and Robert died in Mexico in March of 1975.
The Kardashian matriarch went on to marry second husband Harry Shannon, who passed away in 2003.