Don't sweat the small stuff! Hey, look at it this way. Your Mum could have gone out to get you an 'extra large' because you wouldn't think you fit into a medium!! Now that would REALLY give make you mad
I would love for my Mum to think I was beautiful.
The other day she said (she has just gotten back from a holiday in Tonga)
"Those Tongon girls Livy, they are HUGE!!! They even make YOU look thin!!!".
Thank your lucky stars your Mum percieves you as thinner than you are, what a compliment!