I agree with Jenny96. There is no need to get rid of all of your pants. These are my general rules of modesty:
No bellybutton, no cleavage of any amount, skirts go to the knee. I also choose longer shorts (Bermuda style or close to it). For church, I make sure I dress nicely. No jeans, shorts, flip-flops, etc. I also keep my shoulders covered. I hope this helps you.