Can You Guess Which Celebrity Wrote These Books?

He’s had formal training: Franco is currently a PhD student in English at Yale University. He got his undergraduate degree in English from UCLA in 2008 and an MFA from Columbia in 2010. He's seen here with yet another book he penned, "Palo Alto."

She took online classes through Harvard Extension School and took flak from the Harvard newspaper because there are no admission requirements.

Steve Martin on writing: “Writer’s block is a fancy term made up by whiners so they can have an excuse to drink alcohol.” He's written over 10 other books.

"Playground" is told from a bully’s perspective. 50 Cent admitted he used to be a bully and said, “To know now from an adult’s perspective and be able to write things, I can look back on those actual situations and say, ‘That was completely wrong.’ But I know what was motivating it now.”

Carrie Fisher on writing: “I wrote from when I was 12. That was therapeutic for me in those days. I wrote things to get them out of feeling them, and onto paper. So writing in a way saved me, kept me company. I did the traditional thing with falling in love with words, reading books, and underlining lines I liked and words I didn’t know. It was something I always did.” Her bestseller "Postcards from the Edge" was made into a movie starring Meryl Streep.

Lauren Conrad on writing: “I like to write at night when my cellphone isn’t ringing, my roommates are asleep, and all is quiet. I always start with a detailed outline and then flesh out the story I want to tell from there. Once I share this outline with my editor, I begin writing — my favorite part.”

Wary of becoming another “celebrity author,” Hugh Laurie initially submitted the manuscript under a pseudonym.

"Haiti" is a book of photos Leto took himself during a trip to Haiti, with 100% of profits going to charities to assist earthquake survivors. "Notes from the Outernet" are photos of his taken "outside the internet."

"Freckleface Strawberry" was Julianne Moore's nickname when she was 7. She hoped that it would go away when she grew up, but it didn't, and she learned to embrace it. She's written two other books in the "Freckleface Strawberry" series.

Henry Rollins on writing: “I have burned more hours than I would like to admit in slow agony, ransacking my brain for an idea to write about. The first draft is handwritten and then, often moments later, is rewritten into a computer for the second draft and worked on from there. When I am off the road, this is often my big Friday night out.”

In 1992, Madonna released her extremely controversial book "Sex," which sold over 150,000 copies on its first day of release. It’s become one of the most sought after out-of-print books of all time. Since then, she’s written numerous children’s books including "The English Roses" series and "Five Books for Children" series.

Macaulay Culkin said, “The funny thing is, I’m not really a big reader, not a big fan of books in the first place.”

Ethan Hawke on getting encouragement to write: “At a real pivotal moment,” he said, “if the right person literally stops you and tells you that you’re good at something, you kind of believe them. And then you pursue it.”

Nick Cave on not listening to music while writing: “I find it very distracting and it would also impose moods on your writing and influence your writing and that is not a good thing. There is no visual imagery around, there is no window to look out, and there is certainly no music.”

"Modelland" took Tyra Banks five years to write. She said, "Because my outline was so robust—40 pages long—they thought I could do it faster. My chapters are between 11 and 15 pages, and I could never finish one in one day."

Gillian Anderson co-authored the sci-fi novel "A Vision of Fire" to be the first in a series. Anderson has said that the main character Caitlin was conceived with the idea in mind that Anderson would play her should the series be adapted to film.

Lucy Liu is an accomplished painter and published the book "Seventy Two" with reproductions of 72 of her paintings. She wrote a short meditation for each of the 72 images “for those who wish to further contemplate and engage.”

John Waters actually hitchhiked across America, and then he wrote a book about it. John Waters on writing: “I write every day — five days a week in the morning I write something. That’s how I make my living. I’m writing new speeches, journalism, books or something. Every morning, Monday to Friday, 8 to 12.”