Kelsey Grammer has revealed that Camilla, Duchess of Cornwall once grabbed his backside.

While speaking at the Spectator Cigar Awards Dinner on Sunday evening, the Frasier star told the guests that he had mingled with the wife of Princes Charles while at an event at the White House when she allegedly stole the opportunity.

The actor said: 'I was at an event at the White House and I felt a tight squeeze on my right buttock and I turned to a woman who I knew to be Camilla and she said to me in an impish way, 'nice to finally meet you… in the flesh!''

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Nice to meet you! Kelsey Grammer (right) has revealed that Camilla, Duchess of Cornwall once pinched his bottom while at an event at the White House

Also at the event was the Duchess of Cornwall's son Tom Parker Bowles, who hosted the decadent evening, which was held at the Boisdale of Canary Wharf in London.

The 59-year-old actor, who was named the runner-up for the Spectator Cigar Smoker of the Year Award 2014, also managed to compliment fellow guest Nancy Dell'Olio during his acceptance speech.

'It has been a fantastic evening full of fantastic people and I am very honoured to be here,' he said.

'I would also like to add that Nancy Dell'Olio has done more for red lace than anyone in history.'

Praise: Kelsey alongside Tom Parker Bowles and Nancy Dell'Olio, whom he claimed had 'done more for red lace than anyone in history'

Host with the most: Camilla's son Tom Parker Bowles was the host for the cigar awards

Arnold Schwarzenegger was one of the star guests of the evening, though, having beaten Kelsey to win the top prize on the night.

The two actors appeared to be right at home during the cigar-aficionado soiree.

Both actors were at the Spectator Cigar Awards Dinner as nominees for the 2014 Cigar Smoker of the Year Award.

Since the 67-year-old former California governor and Kelsey have both enjoyed a smoke in the past, the nominations seemed fitting.

Happy: Arnold Schwarzenegger and Kelsey Grammer seemed pleased to see each other at the Spectator Cigar Awards Dinner on Sunday

They had stiff competition for the award though, as other nominees included the likes of Ricky Gervais, Laurence Fishburne, tennis star Boris Becker, Michael Caine, golfer Miguel Angel Jimenez, London mayor Boris Johnson, and Jeremy Irons.

In addition to being aimed at cigar lovers, the Smoker of the Year award was given to someone who had 'a complete passion for the pure enjoyment of cigar smoking'.

The annual event was sponsored by Mehmet Kurt of Kingwood Stud and founded by Boisdale.

Honours: Held in London, the dinner honoured public figures who have openly enjoyed cigars

Busy: 67-year-old Arnold (left) and 59-year-old Kelsey (right) made the rounds during the dinner, pausing to take a photo with Heather Milligan

Smoker: The former California governor has been a fan of cigars for years

More than just an empty honour, Arnie won an impressive set of prizes, including a JEANRICHARD 1681 18 carat pin pink gold wristwatch, a bottle of Chateau Mouton Rothschild 1999 and a Frederic Saint Romain designed limited edition ST Dupont lighter.

Runner-up Kelsey meanwhile didn't leave empty handed, pocketing a designer watch of his own.

Arnold, who dressed down somewhat in a dark suit with a black-and-white, polka-dot tie, has been an avid fan of cigars for years, often being photographed with one in his hand.

Whether they won or not, the actors seemed to be enjoying themselves immensely at the formal dinner - Arnold even pinched Kelsey's cheek at one point.

Nominees: Arnold and Kelsey were two of the nominees for the 2014 Smoker of the Year Award at the dinner

Competition: Other actors up for the Smoker of the Year Award included Ricky Gervais, Jeremy Irons, Laurence Fishburne, and Michael Caine

Throughout the night, Arnold and Kelsey were spotted laughing and grinning repeatedly.

Arnold also met with Baroness Trumpington, the only nominee for the Cigar Lifetime Achievement Award.

A member of the British House of Lords and a one-time military code breaker, the Baroness apparently also liked to smoke.

Lifetime achievement: Baroness Trumpington (left) was to receive a Cigar Lifetime Achievement Award