An update on Abby and Erin Delaney, who were born conjoined and separated at Children's Hospital of Philadelphia (CHOP). After a prenatal diagnosis, the Delaney twins were born in July 2016 at CHOP's delivery unit for babies with birth defects. At 11 months of age, they were separated during a long and complex surgery. In all, they spent 485 days in the hospital. Now more than 2, they are home and making amazing strides in their growth and development.