Oops! Khloe Kardashian Flashes Breast on Live TV

Credit: Astrid Stawiarz/Getty Images

Oh no, Khloe!

Khloe Kardashian had a prolonged wardrobe malfunction on live TV Tuesday morning -- unwittingly exposing her breast through a completely sheer black top while she and sister Kourtney appeared on Fox and Friends.

Four minutes into their interview, Khloe, 26, didn't seem to notice a major "nip slip" -- and neither did Kourtney, 32, or the three Fox and Friends hosts as they chatted up the new season of Keeping Up with the Kardashians.

Fox has since yanked the video of the R-rated interview from its site. But Khloe has no regrets!

"My mom just called me saying my nip slip is 'all over the internet!'" she tweeted Tuesday afternoon. "Ha! Is it weird that I love it?! Who knew nipples were so special?"

In an earlier Tweet (some fans wondered whether her account was hacked), the reality star supposedly wrote: "Thank God! I f***ing love nipples!"