Did you know one in eighteen men and one in fifty women has a third nipple? (Buzzfeed)  These 5 celebrities are in that group:

1. Mark Wahlberg.

2. Tilda Swinton.

3. Harry Styles.

4. Bill Paxton.

5. Carrie Underwood. Although she had hers removed because she was embarrassed by it. She made the revelation during her American Idol audition thanks to Simon Cowell.

Click here for a few more celebs who have a 3rd nipple and read the full story.

Photos courtesy of Getty Images