The Duke and Duchess of Cambridge have attended a film premiere on the eve of her 30th birthday.
Kate graced the red carpet for Steven Spielberg's new blockbuster, War Horse, wearing a floor-length black lace gown by Alice Temperley.
The long-sleeved dress, which was nipped in at the waist, was accessorised with a black clutch bag and intricate diamond jewellery.
The royal couple shared the red carpet with the star of the film - a thoroughbred called Joey, who was driven from his stables in Milton Keynes to face fans and photographers.
When the royal couple arrived, the crowd gave a resounding cheer.
They walked up the red carpet, sheltered from the rain by a see-through umbrella, and when Kate spotted the horse she grinned broadly.
Spielberg said he got "a buzz" from meeting the Duke and Duchess.
"It's an honour to be here with the royals. This is my first royal premiere for the Duke and Duchess, having done them before for the Queen and the Queen Mother. This is a wonderful occasion tonight," said the director.
"This is so exciting. I get a buzz. You never grow out of something like this," he added.
His British cast including Benedict Cumberbatch, Tom Hiddleston, Emily Watson, David Thewlis and newcomer Jeremy Irvine also walked the red carpet.
The premiere, in London's Leicester Square, was also attended by 600 serving and ex-serving military personnel and their families, as well as beneficiaries of military charities.
The premiere was in aid of the Foundation of Prince William and Harry, which helps the welfare of those in the armed forces.
"It's a huge privilege that the film has been blessed by them and they decided to lend their support behind it," said Hiddleston, who plays Captain Nicholls.
Michael Morpurgo, the author of the children's book on which the film is based, said it was an "honour" that the Duchess chose War Horse as her first royal premiere and said he would send her a copy of the book as a birthday gift.
"I am thrilled, it is a wonderful honour that she has chosen this film to do that," he said.
"I will send her a copy of War Horse for her birthday.
"She is a wonderful example of dignity and calm and I like that in her."
