Sisters Julia and Siobhan O’Sullivan have always been close but they became closer when Siobhan was diagnosed with leukemia in 2019 at age nine.
![](https://thetablet.org/wp-content/uploads/2022/05/OSullivan-family-at-gala-140x105.jpeg)
Sisters Julia and Siobhan O’Sullivan have always been close but they became closer when Siobhan was diagnosed with leukemia in 2019 at age nine.