You totally need this Grimace tee. 

• Short sleeve tee featuring Grimace design
• 100% Cotton Tee
• Screen printed neck label for comfort
• Unisex Sizing

S -  Chest Width:  20 in, Length: 28
M - Chest Width: 21 in, Length: 29 
L - Chest Width: 22.5 in, Length: 30.5
XL - Chest Width: 24 in, Length: 32 
2X - Chest Width: 25.50 in, Length: 33