(Please read parts 1 and 2 to get a background]
After that crazy hot conversation with my girlfriend where she admitted that she wants her brother to fuck her, I dropped her off back to her parents place. Without fulfilling her wish to fuck her and in fact left her horny for her brother. But on the way we went to the mall and she picked up this outfit – well, basically a sheet of cloth. White, semi transparent. She tried it on for me with nothing underneath and I made her come out of changing area. So many eyes on her and it was getting her really wet. You can clearly see tits and nipples through it.
Her – do you think… my brother will like seeing his elder sister in this?
Me – oh yes, he would love to check his sister out and get a glimpse of what she’s hiding underneath…
Her – not hiding anything to be fair… I’m practically naked… look at these guys, easily ignoring this top and focusing on the good stuff…
Me – I bet your brother will do that… and you know what… what if you wear bright red bra and panties underneath…