First it was the Queen, then Prince Harry and now Prince William has done it - yes, the Duke Of Cambridge has joined the Royal photobomb craze.
William just happened to be in the area as Sir Chris Hoy posed for a snap at the Commonwealth Games. HRH is a tad blurred, so perhaps he just sneaked in at the last moment.
His photobomb moment follows brother Harry's thumbs up behind New Zealand rugby officials last week:
And his grandmother's appearance behind two Australian hockey players a few days earlier:
A bit later it was the Duchess of Cambridge's turn; although Kate didn't exactly photobomb Sir Chris she was certainly checking something out from the rear: