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The 39-year-old wished her younger sibling a happy 23rd birthday with a snap of them from a photoshoot in a shower with wet t-shirts.
Piers was quick to retweet it with the comment 'so weird' and many joined his bandwagon and agreed the picture was indeed a bit strange.
Agreeing with Piers, one person wrote: "Sisters behaving sexually towards each other is weird." Another added: "Erm yeah weird...let me just check again...yup it's still erm weird."
Jumping to Kim's defence, someone commented: "What's weird? Me and my sister are super close and if somebody paid me thousands and thousands to do shoots like this I wouldn't hesitate."
Another pointed out: "But they're getting paid thousands and not really showering together! What's more weird is pictures like this will sell for thousands, who can blame them if it pays the mortgage not like they're doing anything intimate together!"
Despite Kim removing it from her Twitter, she's standing firm with it on Instagram:
This isn't the first time Piers has ripped into the infamous family publicly. In July, the Good Morning Britain host laid into Kim and her husband Kanye West after she officially became a billionaire.
Gushing over his wife, Kanye wrote: "I am so proud of my beautiful wife Kim Kardashian West for officially becoming a billionaire.
"You've weathered the craziest storms and now God is shining on you and our family. So blessed this is still life. So I made you this still life. We love you so much."
Taking a sarcastic approach with his response, Piers said: "Kim Kardashian becoming a billionaire... Kanye West, very proud of his wife, after the struggle that she's been through, and now becoming a billionaire.
"The one thing I think we're all agreed on at this very difficult time, with the global pandemic and the economic meltdown, the one thing we're happy about is that Kim Kardashian has won her struggle and become a billionaire."
Featured Image Credit: PA/Twitter - Kim Kardashian West