Preston, 56, posted her own anniversary Instagram tribute to her husband, taking a moment to gush over him.
“To my dearest Johnny, the most wonderful man I know,” she began. “You have given me hope when I have felt lost, loved me patiently and unconditionally… made me laugh harder than any other human being possible… shared the most beautiful highs and at time lows.”
The couple shares daughter Ella, 19, and son Benjamin, 8, and their son Jett passed away in 2009 from a seizure.
“You’re a dream Daddy and make life so much fun!!” Preston added. “I trust my love with you implicitly… with you I know I will always be okay no matter what happens… I love you forever and completely. Happy 28th Anniversary @johntravolta.”