Check out Newsround's picture gallery of the historic Wales v England game!
Wales stormed to a 30-3 win with Alex Cuthbert scoring two second-half tries for the reds.
Leigh Halfpenny's kicking helped add to Wales's score with four penalties.
Dan Biggar added eight points with his boot too! The outside half only made his Six Nations debut this year.
Flanker Justin Tipuric was awarded Man of the Match. Speaking after the record win he said: "It's a bit unreal, really. It's a dream. The boys were outstanding and everyone worked so hard for each other."
On a rainy day in Cardiff, the roof of the Millennium Stadium was shut for the big Six Nations decider between Wales and England. It helped keep the sound of the cheering crowd inside the stadium, meaning the noise was deafening!
The crowd inside the Millennium Stadium were in full voice, cheering, chanting and singing. There were loads of daffodils, dragons, Welsh and English flags as well as a few knights in shining armour!
Having won all their matches so far in the Six Nations, England were hoping to claim the Grand Slam. The final score was a big disappointment for Stuart Lancaster's side. "It's about putting it all into perspective," the England coach said, "I think we will learn a lot from it."
Meanwhile, Wales are celebrating defending their Six Nations title. It's the 26th time they've won the tournament, equalling England's haul.