Princess Eugenie Attend the Oscar's Book Prize 2018 at St James's Palace on May 14, 2018 in London, England.

Katie Derham (L) and Princess Eugenie attend the Oscar's Book Prize 2018 in association with the Evening Standard at St James's Palace on May 14, 2018, in London, England.

(L-R) Alice Ashton, Viveka Alvestrand, Princess Eugenie and Sarah Ferguson, Duchess of York attend the Oscar's Book Prize 2018 in association with the Evening Standard at St James's Palace in London, England.

Katie Derham (L) and Princess Eugenie attend the Oscar's Book Prize 2018 in association with the Evening Standard at St James's Palace in London, England.

Princess Eugenie attends the Oscar's Book Prize 2018 in association with the Evening Standard at St James's Palace in London, England.

(L-R) Mr. Ashton, Sarah Ferguson, Mrs. Doreen Ashton and Alice Ashton attend the Oscar's Book Prize 2018 in association with the Evening Standard at St James's Palace in London, England.

(L-R) Laura Hughes, Princess Eugenie, and Sarah Ferguson, Duchess of York attend the Oscar's Book Prize 2018 in association with the Evening Standard at St James's Palace on in London, England.

(L-R) John Dougherty, Laura Hughes and Sarah Ferguson, Duchess of York attend the Oscar's Book Prize 2018 in association with the Evening Standard at St James's Palace in London, England.

Princess Eugenie and Alice Ashton attend the Oscar's Book Prize 2018 in association with the Evening Standard at St James's Palace in London, England.

(L-R) Alice Ashton, Viveka Alvestrand, Princess Eugenie, and Sarah Ferguson, Duchess of York attend the Oscar's Book Prize 2018 in association with the Evening Standard at St James's Palace in London, England.

Princess Eugenie attends the Oscar's Book Prize 2018 in association with the Evening Standard at St James's Palace in London, England.

(L-R) Alice Ashton, Viveka Alvestrand, Princess Eugenie, and Sarah Ferguson, Duchess of York attend the Oscar's Book Prize 2018 in association with the Evening Standard at St James's Palace in London, England.

(L-R) James Ashton, Princess Eugenie, and Sarah Ferguson, Duchess of York attend the Oscar's Book Prize 2018 in association with the Evening Standard at St James's Palace in London, England.

(L-R) Katie Derham, Princess Eugenie, and Sarah Ferguson, Duchess of York attend the Oscar's Book Prize 2018 in association with the Evening Standard at St James's Palace in London, England.

Princess Eugenie speaks at the Oscar's Book Prize 2018 in association with the Evening Standard at St James's Palace in London, England.

Princess Eugenie delivers a speech at the Oscar's Book Prize 2018 in association with the Evening Standard at St James's Palace on May 14, 2018, in London, England.

Princess Eugenie attends the Oscar's Book Prize 2018 in association with the Evening Standard at St James's Palace in London, England.

Princess Eugenie and James Ashton attend the Oscar's Book Prize 2018 in association with the Evening Standard at St James's Palace in London, England.

Princess Eugenie and James Ashton attend the Oscar's Book Prize 2018 in association with the Evening Standard at St James's Palace in London, England.