Update — Sept. 23, 6:57 a.m., ET: A whole host of fascinating information has come to light which suggests that this story is a hoax. Buckle up.
Snopes points out several intriguing question marks over this story.
First, Jasmine Tridevil's pictures are only taken by her – and not by any third party. But secondly, and perhaps rather more tellingly, the (now defunct) domain jasminetridevil.com is registered to an Alisha Hessler.
BuzzFeed News has reached out to "Jasmine" for further comment.
She has given an exclusive interview to The Sun in which she claims it's not a hoax: she says her film crew recorded the procedure and, "I plan to release it on my reality TV show and I don't really care what people think or say about me."
She has now given another interview to local station 10 News Tampa, on condition they only discuss her self-produced show.
The station reports: "When we asked to see her third breast, she obliged, but with only a quick flash. When asked her why we couldn't have a longer look Tridevil responded, "I'm not ready to do that right now because it's in episode six of my show."
Original story below.
On the station, the 21-year-old said: "I got it because I wanted to make myself unattractive to men. Because I don’t want to date anymore."
She told the station: "The reaction has been crazy."
It's not entirely unsurprising. Thus far she seems to be enjoying the attention, writing on her Facebook page, "So I'm flying to New York to appear on The Inside Edition show this Monday! Then going to be on the news, Jimmy Kimmel show and Vice magazine! oh and a few radio shows!"
BuzzFeed News has reached out to her for further comment.
Consultant plastic surgeon and British Association of Aesthetic Plastic Surgeons Nilesh Sojitra told BuzzFeed News:
"This is a clear case of a patient who should not have had surgery performed on her. Someone making this kind of request may have body dysmorphia disorder, or not have thought through the long-term consequences of such a surgery – she will now be scarred for life – and may have benefited from psychological evaluation rather than surgery. Additionally, the actions of the surgeon are unethical and they have acted in a way where no reasonable plastic surgeon would."