Tabitha Somerset Webb wants Duchess Catherine to wear one of her Project D designs.

The 36-year-old fashion designer - who co-created the clothing line alongside Dannii Minogue - is thrilled that Pippa Middleton has worn their pieces on two occasions this year, and is hopeful her older sister will soon follow suit.

She said: "Pippa has been amazing. It's so flattering that she has chosen to wear our dresses. She looks gorgeous in them. She's very much a Project D girl - elegant, classy and sexy.

"Now it would be great if her sister Kate wore one of our designs, too."

However, Pippa - who wore Project D gowns to a friend's wedding in September and to a recent charity event - is not the only royal fan of the line, as Tabitha explained Princesses Beatrice and Eugenie have also worn her creations to public functions.

Tabitha added in an interview with HELLO! magazine: "Princess Beatrice wore our red Crystal dress to Prince Philip's 90th birthday party and Eugenie ordered our floral Lily gown for another private event."