Penny Lancaster stuns in a green sequin gown as she poses with son Alastair, 19, at David Attenborough’s world premiere of Ocean in London

Penny Lancaster turned heads as she posed with son Alastair, 19, as they attended David Attenborough’s world premiere of Ocean in London on Tuesday.

The TV personality, 54, looked sensational in a sleeveless green sequin gown which showed off her amazing figure. 

Penny elevated her frame in a pair of towering heels and toted her belongings in a stylish gold clutch. 

The wife of Rod Stewart layered a brown fur coat over her evening dress as she posed for photos with her son on the star-studded blue carpet. 

Styling her long blonde tresses in voluminous curls, Penny flashed her gorgeous smile as she posed for cameras. 

Meanwhile Alastair dressed smart in a grey blazer which he layered over a white shirt and black trousers.  

Penny Lancaster turned heads as she poses with son Alastair, 19, as they attended David Attenborough’s world premiere of Ocean in London on Tuesday

The TV personality, 54, looked sensational in a sleeveless green sequin gown which showed off her amazing figure

Penny shares two children, Alastair and Aiden, 14, with Rod, who she married in 2007. Rod also has five other children with four other women. 

During the evening a host of celebrities including Geri Halliwell-Horner gathered at The Pelican in Notting Hill before heading to London’s Royal Festival Hall for the main event, sponsored by People’s Postcode Lottery.

A-lists got together to celebrate the legendary environmentalist, 98, and his latest documentary which releases on his 99th birthday on Thursday.

Sir David’s new film is the ‘greatest message he’s ever told’, says its producer.

Ocean: With David Attenborough will see David delve further than ever before into the ‘most important place on earth’ – its oceans.

After being significantly damaged by fishing and pollution, the film argues the sea is ‘at a crossroads’, but ‘it can bounce back’.

Toby Nowlan, the movie’s producer, said: ‘This is not about seeing brand new natural history behaviours. This is the greatest message he’s ever told.’

Never-seen-before graphic footage of the damage that bottom trawling – a common fishing practice around the world – has done to the seabed is said to feature in the film.

Penny elevated her frame in a pair of towering heels and toted her belongings in a stylish gold clutch

The wife of Rod Stewart layered a brown fur coat over her evening dress as she posed for photos with her son on the star-studded blue carpet

Styling her long blonde tresses in voluminous curls, Penny flashed her gorgeous smile as she posed for cameras

Meanwhile Alastair dressed smart in a grey blazer which he layered over a white shirt and black trousers

In the film’s trailer, Sir David made the heartbreaking admission that he is ‘nearing the end of his life’

The environmentalist reveals in the new movie that ‘the oceans can recover faster than we ever imagined’

The pictures will display how the chain that trawlers drag behind them scours the seafloor, forcing the creatures it disturbs into the net behind.

The process also releases huge amounts of carbon dioxide into the sea, something which contributes to global warming.

Sir David will examine inspirational stories of ocean recovery in areas where destructive fishing is banned – such as the Isle of Arran, Scotland and Hawaii.

The broadcasting icon contends that ‘the ocean can recover faster than we can ever imagine’.

But ‘we are running out of time’, says Attenborough, who candidly admitted he may not be around to see our oceans saved as he ‘nears the end of his life’. 

During the heartbreaking admission in the film’s trailer, he said: ‘When I first saw the sea as a young boy, it was thought of as a vast wilderness to be tamed and mastered for the benefit of humanity. 

‘Now, as I approach the end of my life, we know the opposite is true. 

‘After living for nearly a hundred years on this planet, I now understand that the most important place on Earth is not on land, but at sea.’ 

Sir David is hugely popular for narrating the successful Planet Earth series [pictured, an image from Planet Earth III] as well as a host of other documentaries

‘Now, as I approach the end of my life, we know the opposite is true. After living for nearly a hundred years on this planet, I now understand that the most important place on Earth is not on land, but at sea’ [pictured in 1965]

The much loved TV personality has been on screens for over 70 years, with his first appearance being back in 1954, having started at the BBC in 1952 [pictured right in 1954]

He added: ‘Today, it is in such poor health I would find it hard not to lose hope were it not for the most remarkable discovery of all.’

‘If we save the sea, we save our world. 

‘After a lifetime of filming our planet, I’m sure nothing is more important.’ 

Sir David further made a reference to his years on this earth as he opened up about the extraordinary ocean discoveries over the decades and how important it is to preserve the health of the oceans.

He said: ‘My lifetime has coincided with the great age of ocean discovery. Over the last hundred years, scientists and explorers have revealed remarkable new species, epic migrations and dazzling, complex ecosystems beyond anything I could have imagined as a young man.

‘In this film, we share some of those wonderful discoveries, uncover why our ocean is in such poor health, and, perhaps most importantly, show how it can be restored to health. This could be the moment of change.

‘Nearly every country on Earth has just agreed, on paper, to achieve this bare minimum and protect a third of the ocean.

‘Together, we now face the challenge of making it happen.’