Actress LENA DUNHAM is set to pocket a massive $3.5 million after landing a book publishing deal.

The multi-talented 26 year old, who is the creator and star of hit U.S. TV show Girls, has written a modern version of Helen Gurley Brown's controversial 1962 advice book Sex and the Single Girl, which encouraged women to become financially independent and experience relationships without marriage.

Her collection of essays, titled Not That Kind of Girl: A Young Woman Tells You What She's Learned, reportedly sparked a furious bidding war among publishers, with Dunham eventually choosing to sign with Random House.

A statement released by the star reads: "I am thrilled to be working with and learning from the brilliant minds at Random House, and to be among their incredible roster of authors. I look forward to digging deep... to produce the most thoughtful and personal book I can."

The forthcoming book will feature the star's "frank and funny advice on everything from sex to eating to traveling to work".