“I miss you already. Sleep tight… (sic).”
Kirk’s eldest son Michael tied the knot with Catherine, who is exactly 25 years younger than him, in 2000.
The happy couple announced their engagement back in December 1999 before exchanging vows at New York’s Plaza Hotel, after Michael had finalised his divorce from first wife Diandra Luker.
Michael and Catherine, who celebrated their 20th anniversary last year, share two children together – son Dylan 20, and daughter Carys, 17.