Am I out of shape for an 18 year old? (picture)?

[loveyoudoll]

http://i823.photobucket.com/albums/zz159/edgyglamrock/vest.jpg

I want to get down to this size: http://photos.posh24.com/p/127774/l/lauren_conrad/lauren_conrad_shows_off_her_cellulite_and_her_big_feet_.jpg

how to tone up my stomach and leg area??