EXCLUSIVE: Sophie Duchess of Edinburgh hysterics at drinking game

Sophie, Duchess of Edinburgh, was seen having a great time as she took part in a drinking game at a carriage driving event on the Sandringham estate in Norfolk yesterday (Sat).

Sophie, 60, had to down a drink as she drove her carriage, then put the glass down at the next stop, but it FELL OFF and her groom tried to catch it – leaving them both in HYSTERICS.

The royal, who was dressed all in red, with a straw boater hat and black gloves, took part in the fun test as part of the CIAT event (Concours Internationale d’Attelage de Tradition) at the annual Sandringham Horse Driving Trials, of which she is president.

She skilfully guided her horse and carriage up to a wine glass perched on a post, then drank the sparkling water as she drove along.

But she didn’t down the drink in time and had to throw some of the water away, then when she tried to put the glass down at the second post, 15 metres away, it fell off.

Her loyal groom, riding on the back of the carriage, tried to catch the glass – but failed.

“That was pure humiliation,” she said as she continued the challenge.

Sophie looked as though she was having a great time as she giggled her way around the course.

Her daughter Lady Louise was also competing in events over the three-day competition.

Lady Louise inherited her passion for carriage driving from Prince Philip and made her eventing debut four years ago.

The Sandringham trials were started in 1982 by Prince Philip, who wanted to bring one of his favourite sports to one of his favourite places and it always takes place over the weekend after Royal Ascot.