Jools Oliver paid a sweet tribute to her husband of 21 years on Wednesday.The mum-of-five took to Instagram, where she re-shared a picture taken by photographer David Loftus back in 1995 and posted on his feed earlier that day.MORE: Jamie Oliver's son River poses up a storm in new photos – fans reactThe moody black-and-white shot showed Jamie sipping what looked like a milkshake as he sat holding a book on a barstool in Soho's Bar Italia.The celebrity chef was wearing a black leather jacket with