The Princess of Wales gently tapping her husband Prince William on the bottom as they walked the BAFTAs red carpet appeared to be a rare show of PDA.
But a lip reader has revealed what he believes was said between the couple before Kate carried out the cheeky gesture - and it might not have been quite the affectionate gesture it first seemed.
In a clip showing the lead-up to and the bottom patting moment, William and Kate can be seen making their way along the red carpet.
