A new photo has been released of a much younger Kate Middleton and her younger sister Pippa thanks to their controversial uncle.

Middleton's uncle, Gary Goldsmith, shared a 1993 photo of Kate and Pippa in his 16-page Hello! article titled The Kate I Know.

The vintage photograph shows the smiling Middleton sisters as bridesmaids posed with their mother, Carole Middleton, at their uncle's first wedding.

Kate was 11 at the time the picture was taken, and Pippa was 9. Kate was a wearing a pale pink dress with puffed sleeves at the shoulders with rose details along the neckline and a floral tiara headband and Pippa was dressed identical to her sister. Their mother wore a navy blue hat with a blue print dress.

View the rare and vintage photo of Kate Middleton, aged 11 and Pippa, age 9 here.

Pippa served as the head bridesmaid to her older sister's wedding to Prince William, the Duke of Cambridge on April 29, 2011.

The Hello! cover story article featured many other exclusive family photos for the cover story. The Middleton sisters' uncle, the younger brother of their mother, Carole, divulged details about his niece related to vacations she spent at his Ibiza villa, nicknamed La Maison de Bang Bang to Hello!

Goldsmith said he intends to write an autobiography, and the book will be about his "experiences at the heart of the Middleton clan."

A St James' Palace rep to comment on the Hello! story.

"We are not commenting on the grounds that we wouldn't comment on private conversations between members of the Middleton family," the rep told Mail Online.