Slumber Party: A Shrinking Men Story by Tina Tiny

Will has a big crush on his sister's best friend, Miranda. Miranda and Allison are having a sleep over right down the hall and he's not allowed anywhere near. Solution? Will invites his friend, Brad, over for a night of games. Brad, however, has a massive crush on Allison, and when he hears that their two dream girls are just down the hall, he devises a plan that will allow them to sneak in and spy on the ladies. A few shrinking pills later, and the boys are nestled away in Allison's room, ready to watch the show. Until one of the girls spots the tiny pair, that is....

Shrunken Men (SM), Giantess