How much more weight should i lose? (5'7.5" 115 lbs)?

I'm 115 and I'm 5'7.5" I used to be 134 in the beginning of May but I hated how I looked... I still do. I'm a ballet dancer and I exercise at least 4 hours a day in dance or gymnastics. At 5'7.5" how much weight should I lose to look skinny.