William and Kate shared a flirty moment together at Royal Ascot on Friday as they appeared at the event alongside the King and Queen.
The Prince and Princess of Wales were due to present an award at the races, and before that, they took part in the royal carriage procession together.
Kate looked glam as ever in a chic red Alexander McQueen dress and matching Philip Treacy hat, with William dressed in a sharp suit and top hat.
The Mirror reports Kate and William were pictured looking at the trophies on the penultimate day of the races. They then greeted jockey Oisin Murphy after his triumph with the Commonwealth Cup on Shaquille.
The Prince and Princess also shared a brief flirty moment, with Catherine giving William a cheeky tap on the bottom as they got ready to present a trophy. Earlier this year, a clip of the Princess doing the same thing on the BAFTA red carpet went viral, with fans saying how much they loved the PDA.
According to body language expert Judi James, it seems the case that Kate performed the gesture following a mistake by William - and she used it as a reprimand. She told the Mirror: "This bum-tap gesture is part of a swift series of non-verbal signals between the couple, known as tie-signs.
"They were clearly more tactile than usual for this red carpet appearance and their very glamorous styling gave them the look of an A-list power couple.
"Like all good A-listers, Kate seemed to be using tie signs or non-verbal cues to help choreograph their movements but there was one small moment when they appeared to fall out of sync, possibly due to the fact that William seemed unable to keep his eyes off his stunning wife."
Several other members of the Royal Family appeared at the races on Friday including Princess Beatrice and Sophie, Duchess of Edinburgh, and of course the King and Queen. Kate and William don't live far away from the racecourse following their move to Adelaide Cottage in Windsor's Home Park last year.
They were seen on Thursday with Prince George at William's former school Eton College, prompting speculation that the nine-year-old may be following in his father's footsteps. William and Kate were guests of the late Queen a number of times at Royal Ascot, a racecourse the monarch had a great affinity with and where she had more than 20 winners.
Charles and Camilla appeared ecstatic when their thoroughbred Desert Hero, an 18-1 longshot, won the King George V Stakes on Thursday - their first Royal Ascot win - and they have another chance of victory when Candle of Hope rides later in the Sandringham Stakes.
They were joined in the carriage procession by actress Dame Judi Dench, the Duchess of Edinburgh, and Princess Beatrice and her husband Edo Mapelli Mozzi.
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