Oh, Tinks :-(
My mother used to say really hurtful things to me, when I was a teenager. I don't think they realise what an impact it has, I really don;t.
Mine used to mock me on my weight... it lead to an eating disorder and a lifetime of "issues" with food and my weight.
I honestly think a lot of it's to do with their own self esteem and jealousy.
I know it's easy for others to say, but just ignore it chick.
Go listen to some Steps (yes, I really did just say that) and have a good look in the mirror.
You're a beautiful young girl.... :-) xx