in highschool my friend had one. She was back after a couple of weeks. She said it was WELL worth it (for her self esteem and physical comfort).
PS I'm 6'3" and a C- I was actually just talking to my BF about how *ahem* large i look and I don't think smaller would necessarily be bad for a tall girl! I'm just skin and bones and then WABAM a large-er chest size.
whoa.. sorry if that was too much info. hehe
Goodluck with your decision!!!