Two years ago Julia, a high school student from Ohio, received an email from a woman in New York she had never met, claiming that her daughter and Julia shared the same biological father. The phone call that followed changed her life forever, as she discovered that she had not only one half-sibling, but more than she could ever have anticipated. Julia grew up with her two mums Betsy and Kathleen and her adopted sister Sarah. She always knew she was donor conceived – what she never expected was to discover more than 20 donor half siblings. Julia tells us her own story as she prepares to meet some of her siblings for the very first time