Thalia Kalkipsakis is the author of several books in the Go Girl! series, including The Worst Gymnast, Sister Spirit, Dancing Queen and Basketball Blues. She has also written a nonfiction book, It’s True! Sleep Makes You Smarter! Her books have been translated in many languages and sold around the world. Kalkipsakis grew up on a farm on the outskirts of Melbourne, Australia, and used to escape into the bush to explore. Her biggest passion has always been writing, but she has also been a dancer and edited websites and travel guides. She now lives in north-eastern Victoria with her husband and two children and a black cat named Bindi.