Hordes of authors and their fans filled the National Mall this past Saturday and Sunday for the Library of Congress' annual National Book Festival.

And, apparently, everyone has a new book.

Songstress Jewel was signing copies of her new children's book, "That’s What I’d Do," a lullaby dedicated to her newborn baby. Olympic Gymnast and Gold Medallist Dominique Moceanu was encouraging young gymnasts and promoting her series "Go for the Gold Gymnasts."

The major literary heavyweights pulled in two-hour-long lines of fans.

Famed "Goosebumps" author R.L. Stine was also there in all black (his "costume") autographing books for generations of fans. Pulitzer Prize-Winning Author Junot Diaz ("This is How You Lose Her"), Nobel Laureate Mario Vargas Llosa ("The Feast of the Goat"), New Yorker Writer Jeffrey Toobin ("The Oath: The Obama White House vs. the Supreme Court") and Washington Post Reporter Bob Woodward ("The Price of Politics") drew some of the largest crowds. See a full list of authors here.

It was nice to see the masses gathering on the Mall for something other than taking inappropriate photos with the Washington Monument.