Joe, Shereen and Stanley turn on the Christmas lights, ready for a morning of festive fun! The star of CBBC comedy Dexter Procter and soap star Bradley Riches are in the studio. Stanley sets up his own holiday camp, while Capital DJ's Jordan, Chris and Sian play Truth or Dare. Plus live music from Brooke Combe, lots of slime and the best games! Saturday Mash-Up is totally live... so anything can happen! 

Bionic, Diamond, Nitro and Steel from Gladiators join in the fun all morning – and one of them will be slimed! It's the grand finale of Joe v Shereen... can Shereen draw level, or will Joe be victorious? There's a special Christmas performance from Kidz Bop and games including Senseless. Plus festive cartoon fun from SpongeBob Squarepants!