Keeping Up With The Kardashians star Kim is known for being extremely close with her family, including siblings Khloe and Kourtney, and half-siblings Kylie and Kendall Jenner.
We were therefore surprised to hear she'd managed to keep her Vogue magazine photoshoot a secret from all of them until it was publicly announced.
Appearing on US show Late Night with Seth Meyers yesterday, the brunette said the only member of the Kardashian-Jenner clan in the know was her mum Kris Jenner as Vogue shot some of the images at Kris' house.
"It was such a secret that I didn't even tell my sisters or anyone," she explained. "My mum knew because we had to use parts of her home but it was a top secret mission trying to keep my sisters out of it.
"They were a little suspicious but I just said Kanye was shooting something at my mum's house and it was really private and kind of blamed it on him."
Kim, 33, added she's used Kanye as an excuse before when she's had to keep things hidden from her close ones.
Well, we think the cat might be out of the bag now!
It was announced last week that Kim and Kanye had scored Vogue magazine's April 2014 cover in a decision that sparked fierce debate across the world.
While Kim said it was a dream come true, others were less impressed by Anna Wintour's choice, questioning whether reality star Kim had earned the right to the coveted position.
But brushing off any backlash yesterday, Kim said: "Just to be in the same name as so many amazing people who have been on the cover is an honour and for Anna Wintour to pick us…
"It means so much to Kanye and I. Every girl, I think, grows up dreaming they could be on the cover of Vogue. I collected vintage Vogues for ages. I'm just so honoured."
Kim also revealed that although she and Kanye had shot the images for Vogue, they had no idea they would make the cover until they saw it.
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Copyright: Rex Features