I buy a lot of "going clubbing" stuff that I plan to wear after I lose a few pounds and develop curves but sometimes I wonder if by the time that happens if the fashion will be completely changed over by then, LOL. I've tried to stick to buying clothes that fit right now instead of using clothing to motivate me to lose weight (at least in that way, I still use cute clothing to motivate me to lose weight, but now it's more of a reward for losing the weight)
as for the leggings, there are a few different cuts, some are supposed to fit around the calf and could appear to be loose around the ankle if they are too long (or you are too short 🙂 ). I've found that the L and XL sizes is where the ankle opening starts getting larger. XS, S and M seem to fit much better around the ankle in my experience.