Irish Essie "My Pussy's Better"

Essie is your wife's sister and she needs help picking an outfit for tonight, she knows you always help her sister pick what to wear so she wants your opinion. As she turns around though you get a flash of her boobs in the mirror and you can't help but get hard, Essie notices the bulge in your trousers and decides to have a bit of fun with you, after all, what her sister doesn't know can't hurt her!