The TV personality, 55, posed with 21-year-old daughter Ruby and wife Stephanie on Wednesday, behind giant numbers spelling out the year 2017.
Phillip captioned the photo: 'Congratulations on your graduation Ruby Schofield. #Proud.'
The photo quickly racked up more than 32,500 likes on Instagram.
Phillip's eldest daughter Molly, 24, didn't appear in the photograph, but she is a graduate of Leeds Metropolitan University.