27/09/2015 2:46 PM AEST | Updated 15/07/2016 12:51 PM AEST

Prince Harry And Prince William Face Off During England Vs Wales RWC Match

Karwai Tang via Getty Images
LONDON, UNITED KINGDOM - SEPTEMBER 26: Prince Harry, Prince William, Duke of Cambridge and Catherine; Duchess of Cambridge attend the England v Wales match during the Rugby World Cup 2015 on September 26, 2015 at Twickenham Stadium, London, United Kingdom. (Photo by Karwai Tang/WireImage)

Wales and England have had 134 years of epic rugby clashes, but there was another rivalry during the cross-border Rugby World Cup match -- Prince William and Prince Harry supporting opposing teams.

Prince Harry sat in the Twickenham stands wearing an England supporter jersey, while Prince William donned a Welsh rugby jacket and his wife Kate showed her colours with a Welsh scarf.

The Duke and Duchess of Cambridge sang along to the Welsh national anthem, before William had the last laugh with Wales coming from 10 points behind to pull off an emphatic 28-25 victory against England.

England will now have to beat Australia next Saturday to keep their World Cup campaign alive.