They all share the same birthday. Roxie Koep was born on June 1. She shares the birthday with her 29-year-old mother Rachel Koep and 56-year-old maternal grandmother Paula Ballanger. According to a St. Paul Pioneer Press calculation, the chance of a mother having the same birthday as one of her parents and her newborn is 1 in 133,225. The chance of them all having the same gender is even more remote. Many variables can affect the odds, including that June is a busier month for births than others. Ballanger said when Koep was younger she always tried to give her daughter her own special birthday, but now they nearly always celebrate together.