Marie Claire has added Janet Mock, a New York Timesbest-selling author and transgender rights activist, as a contributing editor. Mock will contribute print and online articles and act as a Marie Claire brand ambassador.

The move marks a bit of a return to Marie Claire for Mock. In 2011, she publicly came out as transgendered in a piece she wrote for the magazine.

Mock is the author of the bestseller Redefining Realness: My Path to Womanhood, Identity, Love & So Much Moreandpreviously served as a staff editor for People.

“Janet is an incredibly smart and articulate writer,” said Marie Claire’s editor, Anne Fulenwider, in a statement. “Her ideas about identity, youth culture, and society’s changing norms about beauty illuminate the ever-evolving definition of the modern woman. I look forward to adding her unique point of view to our pages.”