Oops!

Kourtney Kardashian, 36, suffered a nip slip in her latest Instagram selfie!

The mother-of-three posted a pic, which she captioned, “Goodnight.”

RELATED: Kylie Jenner and Scott Disick Hang Out Together at Tyga's Concert in L.A.

But her nipple stole the show and made a surprise appearance in her sheer top!

View this post on Instagram

Goodnight💫

A post shared by Kourtney Kardashian (@kourtneykardash) on

So, was this little ~peep show~ a way to get Scott Disick’s attention?!

As In Touch previously reported, “Scott wants Kourtney back, but he doesn’t know where he is with her and is confused by her signals.”

Well, we do know one thing — Kourt should be the next celebrity advocate for the #freethenipple movement on Instagram!