The Duke porn star has come out from under the covers.

The university freshman — who bared her skin in blue movies to pay for college — bared her soul Tuesday in an online column in which she posted her picture and revealed her stage name as Belle Knox.

She wrote about how she has been bullied on campus since word of her racy part-time job spread.

“My decision to do porn to pay for college was a private one I made, and then I was outed to my university classmates by another Duke student who had seen me on the Internet a few months ago,” Knox wrote on the XO Jane website. “He proceeded to reveal who I was to the entire Greek system . . . I started to be harassed. He started to be applauded.”

Knox first sparked controversy when she posted an anonymous column on the Jane site last month, talking about how she worked as a porn actress while attending the prestigious North Carolina school.

In today’s revealing story, Knox says she was heavily criticized online for not going the full monty with her identity in the February article.

She also talked about how people had posted messages online saying she should be “raped” and calling on her to “slit her wrists.”

She complained about a double standard under which women who act in porn are shamed but men who watch it are not.

“You want to see me naked. And then you want to judge me for letting you see me naked.”

She ended by saying: “Today, I am choosing to reveal my porn identity to the world. My name is Belle Knox, and I wear my Scarlet Letter with pride.”