Horny Exchange Student

You have let Kitten stay at your house, she is an exchange student and today she wants to make herself useful so she is folding up some washing. She drops the stuff on the floor and gets down to pick it all up, you notice how low cut her dress is and quickly realize she isn't wearing a bra. You can feel your cock twitching and Kitten spots the bulge growing in your trousers, she decides that letting you look down her top and wanking is the best way to thank you for letting her stay.