Um, no thanks...I'm not into 3-foot-tall bikini girls who look like they should be going to a 7th grade slumber party. Or putting puffy stickers on their Jonas Brothers notebook during biology class.
But hey, I won't knock what turns you on, step-sister fantasies and all. Personally, I'd really have to talk my penis into it with her, because I'm sure it would be similar to having sex with a koala or one of the Shirt Tales.