Kourtney Kardashian Is Promoting Flat Tummy Shakes on Instagram, and Followers Aren't Happy

Kourtney Kardashian posted a flat-tummy shake #ad on Instagram, and her followers quickly let her know they weren't happy about it.

Kourtney Kardashian is no stranger to a detox—and let's just say that the Kardashian-Jenners in general aren't averse to social media spon-con, subsidized by products like "appetite-suppressing lollipops" (looking at you for that one, Kim). The messages these posts send about body image, nutrition, and health are, in a word, harmful, considering that the products haven't been proven to be safe or effective—and Kourtney's latest one seems to have left her Instagram followers a little frustrated.

On Friday, Kourtney posted a photo to Instagram that features her in a gray Calvin Klein bra and underwear set. She's holding up a water bottle with a thick, chocolate-y liquid inside of it, and behind her are two pink jars that, we can make out, read "shakes."

"#ad Back from Aspen and back on the @flattummyco meal replacement shakes...they’re exactly what I need right now. Day 3 on the program and I’m already feeling good again. I’m starting to see my tummy toning up nicely. Chocolate is my favorite, but they’ve got 20% OFF all their flavors right now so you guys should check them out!" she captioned the post.

Needless to say, her followers weren't super pleased: "Disgusting that anyone would promote this stuff - meal replacements are NOT the way to healthily obtain a toned look (if 👏🏼 that’s 👏🏼 what 👏🏼 you 👏🏼 want 👏🏼) Eat healthy and exercise is the only way!," wrote @callapetra.

"I want to see you actually ingest this. As anal as you are about organic sand [sic] healthy food, you’ll still shill this? Shameful. Anything for a buck," wrote @nosillamp.

Another follower called her out: "Lol liar. You need a pay check this bad? You don’t drink that trash and you know it!"

Kim, FWIW, was also shilling Flat Tummy Shakes this week.

Kourtney has a reputation for being super health-conscious, so it's personally pretty disappointing to see her promoting these unregulated products. And considering that she's admirably pushed Congress for stricter cosmetics regulations in the past, you'd think she'd be on board with stricter regulations for these often super-sketch diet products (that, let's be honest, just tend to make you poop a lot).

No two individuals are the same when it comes to health or weight loss—and as a reminder, health professionals are far from convinced when it comes to the benefits of these shakes and teas. Let's hope more well-thought-out #ad partnerships are part of the rest of the Kar-Jenners' 2019 resolutions.

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