You have all the right to be angry MisstreeNny! Your sister knew that you dident like places with girls showing off parts that should be disclosed and saved for privacy yet she took ur son to hooters anyway!!! Its disgusting and you did the right thing to get mad at her! (even more so because you found out she KNEW you wouldent aprove).

Family is very important (friends also, and ur in laws)!!! You must respect them and trust them but also they need to deserve that respect and trust. The only best thing (in my opinion) is to still keep in touch with your sister but the next time she wants to spend time with your son it'll have to be in your home where you know she wont do anything you disaprove of and if she does you have the right to tell her to leave and come back when she matures and apologizes.

Again, congradulations about your wedding!!!