It's expected that thousands of visitors will head to Chatsworth House over the next three days for the annual country fair.
Organisers are hoping numbers could be up this year, with some sunshine expected over the weekend.
Chatsworth House has just been voted the UK's favourite stately home in a Which? magazine poll.
The Olympic Torch is currently in Chatsworth before heading to Bakewell.
Guests at Chatsworth House today were invited to tea on the lawn.
The 1950s themed celebration allowed guests to watch the Diamond Jubilee proceedings in London on the Big Screen.
A giant 1950s street party took place at Chatsworth House today, with a 100 metre long decorated table with union jacks, bunting and flags.
The Queen's Ceremonial Day is being broadcast on the big screen and visitors have worn vintage dress to celebrate the event.
Visitors to the Chatsworth estate have joined in the party atmosphere with a 100-metre picnic table, to celebrate the diamond jubilee.
The celebrations have been set up in the Chatsworth House garden as part of its special Coronation exhibition that’s been opened to display the robes that were worn by four generations of the Cavendish family at the Queen's Coronation in 1952.
Hundreds of visitors at Chatsworth House joined in the 1950s-style street party in the garden, which had traditional village fete games and snacks.
The long picnic table was filled with visitors enjoying the special day and the dry, although grey, British weather.
David Jackson, who lives close to the estate, said he and his wife came to the stately home to celebrate the jubilee and "join in the fun with everybody else."