Shawn and Sarah, who also have a three-year-old son named Cody, held back from announcing her birth as they weren’t sure if their baby would survive.
Shawn recently penned an emotional letter detailing the three months Celest spent fighting for her life in the hospital.
“Daddy’s tears fell the first time I saw you," wrote Shawn. "I was worried for you, and I felt the pain you were going through. You had to go through such a huge challenge from the moment that you were born.”