Given that Pippa is currently cycling across America, maybe they should have invited her.
But it falls instead to Prince William, Kate, and Prince Harry to wave off the 22 teams competing in this year's Tour de France.
The royal trio will be at the ceremonial start of the race at Harewood House near Leeds on 5 July as the cyclists set off on their 2,272-mile trip, which will head through the UK, Belgium and Spain before finishing in Paris on 27 July.
William, Kate and Harry are all big supports of British cycling. This is a good moment to recall the London Olympics 2012, and the Duke and Duchess enthusiastically embracing each other as they celebrated Sir Chris Hoy and his teammates winning gold at the velodrome.
Young love, eh?