Royal girlfriend Kate Middleton watched coyly from the sidelines as Prince William sweated it out on the polo pitch.
Princes William and Harry were competing in the Chakravarty Cup at Beaufort Polo club, Glos,.
Wearing a simple green dress Kate, 28, mingled with friends in glorious summer sunshine.
Seemingly not keen to hog the limelight Kate missed the end of match presentation to avoid the waiting photographers.
Kate and Prince William have been dating for nine years and many royal commentators have speculated on possible wedding plans.
After a hard fought match Prince William picked up the winners cup as he team won a close victory.
The Chakravarty Cup raises funds and sponsorship for a number of charities and is named after Saroj Chakravarty, a Patron of The Prince’s Trust.
This year’s beneficiaries include three charities supported by The Princes: the English Schools’ Swimming Association, the Henry Van Straubenzee Memorial Fund and Wellchild.
The Cup’s total donations have now exceeded £1 million, with 2009’s Chakravarty Cup donating over £50,000 to the designated charities.
William and Harry are following in the footsteps of their father Charles who was a keen polo player.