over the past year the london-born artist , 22 , has dropped three stone by following a dairy-free , low-carb and low sugar diet .
the chubby , suit-wearing soul singer has gone and been replaced with a new body confident sam , complete with designer stubble and a trendy new wardrobe .
the pictures reveal a newfound confidence in his slimline look , the result of a dietary regime by nutritionist amelia freer that has ` transformed ' his relationship with food .