Sir Rod Stewart has shared a heartfelt message with his fans on his 80th birthday as he reflects on his 60-year career.

Rod Stewart is celebrating his 80th birthday, a milestone that will be marked in true rockstar style as the singer is set to headline Glastonbury's legends slot this summer

Penny Lancaster, the wife of Rod Stewart, says that she is "so blessed" to share the singer's 80th birthday with him and their children, as several of his celebrity pals also marked his milestone birthday.

As he turns 80, the unstoppable Rod Stewart - who confesses that for him the 'fountain of youth' is in the form of his eight children - is showing no signs of slowing down

The recent upload showed the Grammy winner surrounded by his loved ones, all of whom wore matching ensembles that featured green and white striped jerseys branded with the Celtic FC insignia.

It's quite hard to believe that Sir Rod Stewart is 80 years old as the rocker still seems young at heart. And even though his birthday is today, the lavish celebrations reportedly kicked off weeks ago.

Loose Women star Penny Lancaster has sent touching birthday wishes to her husband Sir Rod Stewart as the rock icon marks his 80th birthday, saying she is 'so blessed' to have him

As Britain's most enduring rocker becomes an octogenarian, Sir Rod Stewart has swapped his wild lifestyle for a quiet life in the country with third wife Penny.

Rod Stewart, who turns 80 on Friday, is currently in the Caribbean with his family, and wife Penny Lancaster has shared some snaps of the celebrations.

Those born on this date are under the sign of Capricorn. They include: -- Musician Ronnie Hawkins in 1935 -- Historian Stephen Ambrose in 1936 -- Olympic decathlon champion Bill Toomey in 1939 (age 86) -- Musician Jim Croce in 1943 -- Musician Frank Sinatra Jr.