Kourtney Kardashian's Instagram followers got a lot more than they bargained for on Sunday night!
The 36-year-old posted a seemingly innocent pic to her account before bed, but fans quickly realized that part of the mother-of-three's nipple was visible below what appears to be a semi-sheer bra.
The look is certainly a lot less conservative than what we're used to seeing from Kourt, who doesn't tend to bare as much skin as her younger sisters.
In fact, the brunette beauty wasn't the only KUWTK star to share a racy pic over the weekend. Kim Kardashian went completely naked on the image-sharing platform, but made sure to abide by the site's no nudity rule with two strategically-placed black bars.
These girls never fail to surprise us!