January diets

Anyone else trying a diet this whole "new year, new me" crap. 
I've always hated it when people say it but this year Ive turned into one of those people.... 
I've started eating healthier and toning my body more and loosing a bit of weight. 
I took these before photos, and they've actually really upset me. I'm not quite sure why, I never thought I'd let myself go so much.  I've always been a skinny straight up and down girl. I was a size 4 for my prom. I'm now a size 12 that's in three years... which isn't bad I guess but I'm just wondering if there's anyone else out there struggling with their body image?