EXCLUSIVE: Penny Lancaster puts on a VERY leggy show alongside stylish husband Rod Stewart as the pair join Christian and Geri Horner to celebrate the Formula 1 star’s VERY star-studded birthday

It was a glamorous evening as selected stars came together to celebrate Christian Horner’s 50th birthday at Mount St. restaurant in Mayfair on Wednesday evening.

Penny Lancaster looked sensational as she showed off her slim legs in a glitzy dress with a high leg slit.

The 53-year-old model opted for a dark gray sequin dress for the birthday party, which she paired with gold glitter heels.

As she left the restaurant, the star wrapped herself in a mustard-colored fur coat as she held her husband’s hand.

The pair joined birthday boy Christian and his wife Geri as they celebrated the racing star’s milestone birthday after the Formula 1 season came to an end this weekend.

Penny looked in good spirits as she made her way home at the end of the night beaming, before the pair hopped into a taxi.

Meanwhile, musician Rod, 78, looked stylish as ever as he teamed his outfit with a range of clashing patterns.

The singer wore a leopard print waistcoat that he paired with black and white striped trousers.

He left his white shirt open at the collar and completed the look with a red and white scarf and a long black coat.

But the highlight of his look was of course his silver glittering pair of brogues, which perfectly completed his rockstar style.

Rolling Stone star Ronnie Wood and his wife Sally and fellow Spice Girl Emma Bunton and her husband Jade Jones were also present at the event.

Ronnie and Rod are old friends, after the pair played together in the rock band Faces, formed in 1969.

‘F1 Supremo’ Bernie Ecclestone also attended the celebrations as he beamed alongside his wife Fabiana Flosi.

Geri Horner, 51, looked effortlessly chic as she wore a beautiful cream coat over an all-white outfit.

Meanwhile, her husband put on a dapper display in a smart suit, showing off his chest with an open collar.

It looked like it was going to be a great night as Ginger Spice took to Instagram to share photos of the evening as the musicians all came together to give Christian a special gift, while Gary Barlow joined them to form the ultimate supergroup.

She captioned the post: “A surprisingly late birthday party for @christianhorner and the Supergroup! @officialgarybarlow you’re amazing!’

Elsewhere, Ronnie, 76, couldn’t keep his hands off his wife as he gave the 45-year-old a cheeky hug on the cheek in the back of the car.

The pair looked as loved up as ever as they put on a dazzling show that evening.

Turning heads, the musician wore a black leather blazer that glowed in electronic blue while adding a funky element to his outfit.

Meanwhile, Sally went all out in a figure-hugging silver sequin dress as she got ready for a party.

Bernie looked great as the 93-year-old cut a stylish figure while donning a pair of tiny round sunglasses.

The former Formula One Group CEO dressed down in a navy blue suit as he posed alongside his wife Fabiana, 46.

The pair opted for matching outfits as Fabiana also wore navy blue as she showed off her cleavage in a plunging silk navy blue dress.