Penny Lancaster wishes her and husband Rod Stewart’s son Alistair happy birthday

She is a mother to two sons, who she shares with her husband Rod Stewart.

And Penny Lancaster‘s eldest boy Alistair was turning 17 this weekend, as the police officer took to Instagram to wish him a happy birthday.

Penny, 51, shared a smiley snap with her boy, 17, as they enjoyed lunch together and leaned in for the sweet photograph.

Happy birthday: Penny Lancaster’s eldest boy Alistair was turning 17 this weekend, as the police officer took to Instagram to wish him a happy birthday

Penny wrote alongside the picture: ‘So proud of my bod, happy 17th Alistair.’

The wife of rocker Rod was wearing pale denim jacket and wore her blonde hair tied back in a ponytail, while a fringe framed her pretty features.

Meanwhile, Alistair wore a black polo neck top and a diamond necklace which featured the word ‘angels’.

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Sweet: His father Rod, 77, also got in on the action and posted a picture with his son on his own Instagram Story

Underneath the snap, Penny’s pal and presenter Davina McCall sent her well wishes, as she wrote: ‘happy birthday Alistair!!!’ 

Penny also posted a black and white snap of herself with Alistair on her Stories and a again wrote ‘happy birthday’ and tagged her son’s name.

His father Rod, 77, also got in on the action and posted a picture with his son on his own Instagram Story. 

Love: Penny also posted a black and white snap of herself with Alistair on her Stories and a again wrote ‘happy birthday’ and tagged her son’s name

Birthday wishes: Underneath the snap, Penny’s pal and presenter Davina McCall sent her well wishes, as she wrote: ‘happy birthday Alistair!!!’

Rod posted the snap and wrote: ‘Happy birthday lad.’

Earlier this week, Sir Rod cut a stylish figure on Thursday evening as he attended the 50th Anniversary Party of London private members club Mark’s Club.

The rocker, 77, was joined by his  son Alastair, who towered over the rocker while beaming for a slew of snaps, as well as his niecer Raphaella.

Showing off his fashion sense, the star donned a bright red blazer with a leopard print design, while his wife looked glamorous in sequins. 

Doting dad: The rocker, 77, was joined by his son Alastair, who towered over the rocker while beaming for a slew of snaps , as well as his niecer Raphaella

Rod teamed his statement blazer with an unbuttoned white shirt, adding a white pocket tissue and a pair of black trousers. 

Accessorising, the Forever Young singer donned a collection of layered necklaces which gave a nod to his Celtic background. 

Standing alongside her husband, Penny donned a black wrap mini dress for the evening, which was emblazoned with dark sequins. 

Her blonde locks were styled in a brushed out yet structured wave, as she added a silver key pendant necklace.

And it was a family affair, as Rod and Penny’s 16-year-old son wrapped an arm around his dad for some snaps.

The up-and-coming model donned a pair of checked trousers, a cream turtleneck jumper and taupe blazer. 

Family affair: While their 18-year-old niece Raphaella (far left) joined the family for the event, as she looked stunning in a black maxi dress