Rihanna has kept you behind because she is not happy about the paper you have handed in, it is well below the college standard that is expected and Rihanna wants you to stay behind and completely redo it! She tells you how unacceptable it is to hand in something as messy as this and she can't even read what you have written. While she is telling you off you can't help but notice that the shirt she is wearing is very sheer and very loose, her big natural tits are practically on show and she has no idea that you have purposely handed in bad coursework just so you can stay behind and stare at her tits.