EMILY PRESCOTT: Princess Kate has a secret body double at Chelsea boutique Catherine Walker

The Princess of Wales is such a valued customer for Catherine Walker that I hear she even has her own bespoke mannequin at the label’s Chelsea boutique.

The couture firm is behind many of the Princess’s most adored outfits, including this teal coat dress, below, and the mannequin is made from Kate’s exact measurements, just in case she needs a dress in a hurry.

She has worn the fashion company’s creations at several important occasions, including Prince Philip’s funeral.

Ms Walker, who died in 2010, was a friend of Princess Diana – the two struck up a partnership after she designed the maternity wear Diana wore to announce the birth of Prince William.

The label kept a respectful silence when asked for comment, but I have no doubt that we will continue to see its style legacy carry on long into the future.

Catherine Walker & Co fashion shop in Chelsea, London

Gary Goldsmith is so determined to get the inside story behind the sale of his sister Carole’s Party Pieces business, he’s lined up an interview with the buyer for his new podcast.

Gary, the Princess of Wales’s uncle, has targeted leisure tycoon James Sinclair for one of the first episodes of Pints Of View. Despite the name, Gary and his guests won’t get sloshed. He tells me: ‘We’re on non-alcoholic pints, so we can get through it!’

Carole sold to Mr Sinclair last month after the firm fell into administration with reported debts of £2.6 million.

Hayley Atwell, 41, is set to feature with Tom Cruise in the next Mission: Impossible film

Hayley’s on a new mission

It may be London’s swankiest club but all Hollywood star Hayley Atwell hoped to do at Annabel’s 60th birthday bash perform a duet with Leonardo DiCaprio.

Hayley tells me she was keen to do a rendition of My Heart Will Go On with the Titanic star.

Leo, who was in London last week, frequents the club – but sneaks in and out via a backdoor.

Hayley, 41, left, set to feature with ex-beau Tom Cruise in the next Mission: Impossible film, has been starstruck before at the club.

‘It’s the first place I saw Lady Gaga – an iconic person in an iconic setting,’ she says.