Sir Rod Stewart shares family snap of his wife Penny and six of his children matching in his beloved Celtic kit as the rocker kicks off his 80th birthday celebrations

Sir Rod Stewart has shared a snap of him and his family wearing Celtic football shirts ahead of the rocker's 80th birthday on Friday.

The singer took to Instagram to post the group shot which showed the clan posing on some steps on Sunday night.

The 79-year-old added the caption, 'Early birthday celebrations', and also tagged his beloved Celtic Football Club in the social media story.

Stewart looked laid back in a green and white horizontal-striped replica Celtic football shirt and a crossbody bag with a black strap.

The Maggie May singer was sporting his signature spiky blond locks in the snap and had a pair of red rectangular glasses tucked into his collar.

Stewart's wife Penny Lancaster, 53, was also wearing a Celtic top, pairing it with tight white shorts and a white cap adorned with a black X.

The singer's son Sean, 44, joined the group wearing a white vest - which showed off his striking tattoos on his right arm - a green and blue tartan kilt and a matching cap.

He completed the look with a green and white striped replica Celtic scarf and had his arm around new girlfriend Julia Stambler, who was sporting a black vest.

She matched her look with Sean, adding a green and blue tartan kilt and a matching cap.

Stewart's two younger sons, Alastair Wallace, 19, and Aiden Patrick, 13, who he shares with Penny, were standing beside him in the family photo.

Also joining the sweet family shot was Rod's son Liam Stewart, 30, and his wife Nicole Artukovich, who the ice hockey player married last year.

Stewart's daughters Renee, 32, and Ruby, 37, were also both wearing football tops, with Ruby adding yellow shorts to the look.

Renee's boyfriend Adam Sumner and Ruby's fiance Jake Kalic were also seen in the picture.

The British rock icon turns 80 this week and recently acknowledged his 'days are numbered' but said he had 'no fear' of death.

Last week the singer took to Instagram to post the black and white photo which showed him as a young boy sitting on a mount of sand and a bucket at the seaside.

The 79-year-old wrote: 'From the streets of North London to the world stage, it all started here.'

Showing his charm at an early age, the global hitmaker stared into the camera wearing a matching shorts and top with a sleeveless jumper.

It came after Glastonbury Festival announced Stewart is set to perform on the Pyramid stage in the Sunday teatime 'legends' slot making him one of the oldest artists to perform in the slot.

The Handbags and Gladrags singer began his final Las Vegas residency after 13 years in August but promised he would continue performing and partying in his 90s.

He said: 'I'm aware my days are numbered but I've got no fear. We have all got to pass on at some point, so we are all in the same basket. 

'I am going to be enjoying myself for these last few years as much as I can. I say a few - probably another 15. I can do that easy mate, easy.'

He admitted: 'I'm not like I was in the '70s and '80s and I can't stay up all night, get drunk and go mad and still have a voice just like that. 

'Nowadays I have to protect my voice before and after every show.

'But no, you think I just have water on my rider? You're talking to Rod Stewart here, mate. We go mad after every show. 

'There are 13 of us, six women, really great musicians and I make them drink. We absolutely love it.'