Sister Takes Brother's Virginity

You're just chilling in your room. Your sister wants an honest opinion on what she is wearing as she is going on a date and wants to look sexy but not overdressed. You tell her you don't have anything to base it on as you have never actually had a girlfriend and still a Virgin! You have never had the confidence as you have no clue what do do! You have such a good big sister, she offers to give you pointers and show you what to do to build up your confidence... ends in huge creampie!