Friends, shopping and calories

So tomorrow I'm going to Burlington for an appoitment she has and than we are going shopping at forever 21 which I have never shopped at before ( we dont have one in my city) and my friend said we had to go because the first time she walked into that store she thought they had raided my closest lol and that I'd simply love that store. Well I told myself I would not spend more than 20 - 25 dollars since I really shouldn't be spending money ( I have two plane tickets to pay off, university to save up for and spending money for Europe to set aside, not to mention I have bought myself soo many clothes that I have some that still have tags on them because I just hadn't the time to wear them yet). Anyways I want to either buy myself some skirts or a dress I might wear to my schools semi formal but if I find the dress I want I will probably buy it a size smaller than what would fit be perfectly because I have around 3 weeks until the dance and I will ( yes will, not want but will) be 108-110 lb. Also since I can't fast and we are stopping by Starbucks I'm going to buy myself a grande skinny vanilla latte :] it's 130 calories I believe. And probably a small yogourt or veggie arrangement at a food court.