Parents, grandparents, aunties and uncles have all shared dozens of great pictures of young Blades fans in their beloved United kits.
Click through our fourth collection of Kids in Kits. Can you spot your child or anyone you know?
9. SUFC Kids in Kits
Thirteen-year-old Tyler and Harrison, eight, with Blades striker Lys Mousset. Photo: UGC
10. SUFC Kids in Kits
Ruben James, who was six months old when this photo was taken. Photo: UGC
11. SUFC Kids in Kits
Six-year-old Charlie Hobson in his Blades goalkeeper kit. Photo: UGC
12. SUFC Kids in Kits
Finley, who is 18 months old. Photo: UGC