Kate Middleton and Prince William's children write tear-jerking cards for 'Granny' Princess Diana

Kate Middleton and Prince William have shared the cards their children Charlotte, George and Louis wrote to their late 'granny' Princess Diana for UK Mother's Day. 

The Duke and Duchess of Cambridge showed-off the handmade creations on the official Kensington Royal Instagram page, along with a caption about how Mother's Day can be "particularly challenging" for people experiencing bereavement. 

"Each year on Mother’s Day, George, Charlotte and Louis make cards remembering their Granny, Diana, for William," the post read. 

Charlotte's pink card emblazoned with a multicoloured heart read "Dear Granny Diana, I am thinking of you on Mother's Day, I love you very much. Papa is missing you." 

George's card featured a landscape scene with trees, birds, a blue sky and a sun, along with his own heartfelt message. 

"Dear Granny Diana, Happy happy Mother's Day. I love you very much and think of you always, sending lots of love." 

Two-year-old Louis signed his name on a green card covered in stickers of animals and a hand-painted love heart. 

The three royal children also made a cake for their mother Kate, complete with hearts made out of brightly coloured pipe cleaners sticking out of the top. 

Meanwhile, comparisons continue to be drawn between Meghan Markle's tell-all conversation with Oprah and Diana's bombshell panorama interview, which aired in 1995 - two years before the Princess of Wales' untimely death. 

Both Diana and Meghan spoke of serious mental health struggles, being harassed by the press and feeling ostracised by the royal family. 

Diana died at the age of 36, after suffering fatal injuries in a car crash in Paris, where she was being pursued by the paparazzi.