Wendy Wax grew up in Southfield, Michigan. After earning a BFA in graphic design from the University of Michigan, she moved to New York City, and lived there for 18 years. In NYC, Wendy worked as a children's book editor for the Kipling Press, Parachute Press (senior editor), Byron Preiss Visual Productions (executive editor), and (part-time) Simon & Schuster Books for Children. While an editor, Wendy began writing her own children's books, published by HarperCollins, Penguin, Simon & Schuster, Bantam Doubleday Dell, Marshall Cavendish, Barron's, and other major publishers.
Wendy's books include City Witch, Country Switch (Marshall Cavendish, 2008), Renoir and the Boy with the Long Hair (Barron's, 2008), Even Firefighters Go to the Potty (Little Simon, 2008), Arlo Makes a Friend (Sterling, 2008), Otis C. Mouse (InnovativeKids, 2008), Clara the Klutz (InnovativeKids 2005), A Very Mice Christmas (HarperFestival, 2003), Class Picture Day (Price Stern Sloan, 2005), Sugar and Spice (InnovativeKids, 2006), Bus to Booville (Grosset & Dunlap, 2003), You Can't Scare Me (Grosset & Dunlap, 2003), and Empire Dreams (Silver Moon Press, 2000). She has also written many books for Nickelodeon based on popular characters including SpongeBob, Backyardigans, Dora the Explorer, Fairly Oddparents, and Diego.
Wendy is also a collage artist. Her collages have appeared in Mortgage Banking, Medical Economics, The New York Times, Good Housekeeping, UTNE Reader, Individual Investor, Golf Digest, Sports Illustrated for Kids, The Washington Post, and other major publications. She has done ads for American Express, Bloomberg, Business 2.0, and Philips Magnavox. Her collages were animated for an TV commercial for HBO.
Wendy and her husband Jon Holderer, a national, award-winning photographer, have illustrated three children's books, which Wendy wrote. Wendy and Jon, who live on Eastern Long Island, have an eight-year-old son named Jonah.