The couple was watching the Team Pursuit Track Cycling Qualifying round and apparently got very excited by the competition. Catherine, known stateside as Kate Middleton, nearly showed off her bellybutton in the commotion.
The royal family has been very involved in supporting Team Great Britain ever since the opening ceremony last weekend when Queen Elizabeth II filmed a segment with James Bond star Daniel Craig.
The Queen's granddaughter Zara Phillips won a silver medal in the equestrian competition last weekend.
See more photos of the royal couple at the games...