What age do girls stop developing?

I'm 14, and I'll be 15 in March. What age do girls stop growing in height? Also, in their cup size? I'm about a 34C or 32D.. And when do girls hips stop widening? I got my period when I was 12, but does my period have anything to do with my height? Also, will my face mature still? I dont look young for my age, but I'm hoping when I'm 17 I'll be prettier than I am now..