Sally - I'm 6stone 4 and five foot one am I overweight because all my friends are skinny and I'm?

No. That gives you a BMI (body mass index) of 16, and that's actually underweight. A BMI of 18.5 - 25 is considered normal. If you're not happy with your body, consider building muscle and don't try to lose any more weight. Good luck!

(For anyone using different units, 6stone 4 is 88 lbs or 40 kg, and 5'1 is 155 cm)