Author of a wide range of information books (Baby on Board: A Beginner's Guide to Pregnancy; Every Girl's Geek Guide) and a range of series for younger readers and young adults, including My Life Is..., My Sister, Hot Buns & Ophelia, and the Very Naughty Mother series.
In addition to her writing, Gretel Killeen has worked as a stand-up comic and television host, most notably as the inaugural host of Big Brother Australia (which she hosted from 2001-2007). She has also performed widely on stage, radio and film.