Sienna Miller looked graceful as she posed next to King Charles III on Tuesday.

The actress, 42, was one of many famous faces to attend the monarch’s inaugural King’s Foundation ceremony.

She opted for a patterned purple dress to wear for the regal occasion and looked full of pride as she stood with royalty.

Amongst others, Sienna stood with rock legend Sir Rod Stewart and his wife Penny Lancaster, as well as footballer David Beckham.

The model giggled as she looked on at the King engaging in joyful conversation with Rod while putting on a charming display in the lilac number.

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Sienna Miller looked graceful as she posed next to King Charles III and a host of other famous faces on Tuesday

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The model giggled as she looked on at the King engaging in joyful conversation with Rod.

For the special occasion, Sienna opted for a smooth complexion and slick of red lipstick.

She let her tousled blonde locks  hang neatly around her shoulders and styled the whole look out with a pair of nude heels.

Elsewhere at the occasion, Rod  proclaimed that footballing legend David, 49, will soon receive the same honour he did almost a decade ago. 

Speaking in a video posted to X, he said: ‘Penny and I are so honoured to be ambassadors for the King’s trust.

‘I’m also wonderfully honoured to be a knight. David, yours is coming soon’.

The former England captain is yet to join a finite list of his fellow sports stars to receive such an honour, including the likes of the late Sir Bobby Charlton and former Manchester United manager Sir Alex Ferguson.

He was given an OBE in 2003 for his services to football.

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The former England captain is yet to join a finite list of his fellow sports stars to receive such an honour, including the likes of the late Sir Bobby Charlton and former Manchester United manager Sir Alex Ferguson.

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The rock star, 79, received his own knighthood in 2016 appeared at the inaugural King’s Foundation awards ceremony in London

King celebrates foundation with David Beckham and Sir Rod Stewart

The former Manchester United player was just one of several famous faces at the regal event in London.

He was seen sharing a joke with the monarch, 75, and looked dapper in a black suit and tie.

David – who is married to Posh Spice Victoria Beckham – was in good spirits throughout the event, which was also attended by actress Sienna Miller.

The King’s Foundation Awards have been designed to celebrate students, teachers, alumni and partners of his foundation which provides educational courses, wellbeing programmes and spearheads regeneration projects across the UK, inspired by the monarch’s long-standing ethos of working with nature.

Beckham was recently announced as an ambassador for the King’s Foundation and met with His Majesty at Highgrove.