James Middleton makes public debut at Royal Wedding with new girlfriend Alizee Thevenet

James Middleton, younger brother to The Duchess of Cambridge, has made his first public appearance with his new girlfriend.

James took French girlfriend Alizee Thevenet as his date to Lady Gabriella Windsor's wedding at St George's Chapel on Saturday, with the pair arriving holding hands.

Dressed in a morning suit, the 32-year-old arrived at Windsor Castle with the rest of the Middleton family - including sister Pippa, who once dated the groom, Thomas Kingston.

Pippa and husband James Matthews attended the wedding, as did parents Michael and Carol Middleton.

Alizee, 30, looked relaxed as she walked onto the Royal grounds wearing a turquoise and gold wrap dress, from a high street brand popular with the young Royals, H&M.

The French financial expert paired the Versace-esq dress with nude suede pumps and a boater hat.

James and Alizee have been dating quietly for a number of months now after meeting at a London pub.

They were first spotted together on the Middleton's family holiday in the Caribbean in December last year.

Although, they only just went "Instagram Official" weeks ago - when smitten James posted a photo of the pair in matching outfits, captioned: "Sail away with me".

Thevenet is a finance expert and completed her undergraduate degree in accounting and finance in Brussels, and now holds a master’s degree in investment and finance from Queen Mary University of London. She also speaks three languages.