am 19 and am size 18/20

this is the biggest i have ever been. and am trying so hard to lose the weight but its going no where just now i want to lose weight for my friends wedding in july 2009 so thats my target am a bridesmaid so i dont want to be this size then hope to lose atleast a few stone but anything would be a bonus my weight is also around my stomach which i have heard it quite common in pcos suffers
