Kate and William spend Bank Holiday with both in-laws at Scottish retreat

Kate and William spend Bank Holiday with both sets of in-laws at Scottish retreatBirkhall. Photo: Rex

The Duke and Duchess of Cambridge spent the Bank Holiday weekend cosying up with both sets of in-laws as guests of Prince Charles at his Scottish estate.

Carole and Michael Middleton joined their daughter at Birkhall House in Aberdeenshire, situated on the edge of the Queen's Balmoral estate.

Kate and William spend Bank Holiday with both sets of in-laws at Scottish retreatPA

The young newlyweds are thought to be delighted that both sets of parents get on so well, and a source told The Sun that an invitation to Birkhall means you're definitely on Charles' Christmas card list, saying: 'The Prince of Wales has made a huge effort with Kate's parents.

'Birkhall is his favourite retreat and the fact they have been invited shows there is a genuine friendship.'

It's not the first time Kate's parents have been invited either - they enjoyed a weekend of stag hunting on the estate around this time last year.

Discover Kate's favourite holiday destinations here:

Kate Middleton: Top Holiday Destinations
See Gallery
Kate and William spend Bank Holiday with both in-laws at Scottish retreat
Where: Mustique
When: August, 2008
The holiday: Kate and William spent a week at this upmarket Caribbean paradise haven, which enjoys year-round temperatures of 80F. The island became well known for being a popular holiday hotspot for Princess Margaret, and is also a favourite with Mick Jagger, David Bowie, and Elton John.
Where: Klosters, Switzerland
When: March, 2008
The holiday: Kate and William enjoyed a family getaway when they headed to this exclusive ski resort with Wills' dad Prince Charles. The couple are both a dab-hand at working the slopes, and Kate even showed her cheeky side when she poked William with her ski pole. The royal couple also enjoyed a holiday here in March 2005.
Where: St Andrews, Scotland
When: February, 2011
The holiday: OK, it was work mixed with pleasure, but Kate Middleton and Prince William returned to the university where they first met for their second royal engagement in February. Although they were officially there for work, the royal couple were also said to have enjoyed the beautiful local countryside, which prides itself in being part of the Green Tourism Scheme.
Where: Lake District, England
The holiday: Kate showed off her inherent sporty side on a family holiday in the Lake District when she was just four years old. The princess-to-be can be seen getting her hands dirty as she climbed rocks with a look of pure joy on her face. Cute.
Where: Johannesburg, South Africa
When: November, 2006
The holiday: Kate headed to Johannesburg to celebrate the 21st birthday of Richard Branson's son, Sam. The birthday group reportedly headed off on safari, and, unsurprisingly, travelled first class on Virgin Atlantic.
Where: Ibiza
When: September 2006
The holiday: Kate showed off her amazing bikini body when the royal couple enjoyed some sun, sand and sea action in Ibiza in 2006, where they were spotted soaking up the sun on a luxury yacht.
Where: Courchevel, France
When: March 2010
The holiday: Ski fanatics Kate and William enjoyed the powder at France's celebrity-favourite resort, Courchevel, in 2010. The pair, who were on holiday with friends and family, including Kate's sister Pippa, were spotted enjoying a 'loving' meal at a moutain-top restaurant.
Where: Kenya, Africa
When: November 2010
The holiday: Want to know where Prince William popped the question? The couple were on a luxurious safari holiday in Kenya, where they stayed at the stunning Cheli & Peacock's Lewa Safari Camp situated in the Lewa Conservancy. The camp has 12 sumptuous tents, which cone with ensuite bathrooms, and a swimming pool overlooking the plains. Very romantic.
Where: Birkhall, Scotland
When: December 2009
The holiday: Where do you go if you're dating a royal a fancy a weekend of hunting? Your father-in-law-to-be's fabulous country retreat in Scotland, of course. The royal couple spent New Year here in 2009, and regularly enjoy weekend visits to this beautiful hideaway.
Where: Jordan
When: 1984
The holiday: It was a pretty long holiday... well, two and a half years to be precise! Kate's family moved to Jordan when she was two, and they lived there until she was four and a half. Kate even attended nursery in Amman. Aww.
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