And they're off!
One of the biggest sporting events of the year kicked off over the weekend and the Duchess of Cambridge was front row to see it happen!
The Tour de France fired off in Yorkshire on Saturday, marking the start of a 23-day long race with 200 cyclists battling it out across the UK and through France.
Catherine was spotted having a chat with British cycling favourite Mark Cavendish before they began the race, no doubt passing on words of encouragement.
Her husband Prince William and brother-in-law Prince Harry also joined the Princess as they cheered and applauded the athletes.
Read full caption