Attention seeking behavior. Ex-wife has no decency.

I'm looking for help with how to talk to my kids about their mothers inappropriate behavior. My Ex-wife and I are both in our mid thirties. We have two daughters ages 13 and 10.More and more, since we separated, my ex has been engaging in attention-seeking behavior. I guess she feels like she's getting older and has to flaunt her body while she can. She is always dressed like a prostitute in public. Her Instagram is covered in pictures of her half-naked and or drunk and partying. Our kids have an Instagram and can see everything their mother posts.The other day in the afternoon, I was with my girls in a public downtown area when their mother came to pick them up after a visit. She was wearing a shirt that was 100% see-through without a bra. It was like she wasn't wearing a shirt at all, no exaggeration. She loves the attention.Occasionally this will cause problems with other parents and when it does my ex tells our kids that everyone is just jealous.I have never brought it up to my ex or my kids. I know there is nothing I could say to my ex that would change what she is doing. If anything she would use it as an excuse to take it up a notch. She is entitled to act that way, but it's just not the kind of person I hope my children grow to be.Is there anything I can or should say to my kids? I worry that anything I say will come off as an attack on their mother. via /r/Parenting http://ift.tt/2pUyhmL