Ynes is just looking to lose a little weight and tone up her figure when she asks you for your guidance. She sees pictures of top full-figured models in your portfolio.
"If only I could have a body like this, I wouldn't mind being this weight," she says as she comes around to your side of the desk and lays the book out in front of you. She points to a particularly bottom heavy model that you have worked with before.
"Maybe you can, perhaps there is a way," you say, not sure if you want to reveal your secret just yet.
Ynes playfully bumps your chair with her hip.
"How could I ever have an ass that big, with hips that wide and curvy? If I gained weight I'd just get fat everywhere else too," she laments, all while staring at the growing bulge in your pants.
"If you visualize what it is you want, I think you can manage it... after a few personal, up close and... intimate sessions with me," you say.
Ynes pushes your chair back and pulls her jeans down to reveal her thick bottom and her lack of panties.
"So, the rumors about you are true? You can change women's bodies through sex?"
Before you even answer she has pulled your pants down and is playing with your cock.
"I can... I will... how big do you want to be?" you ask as she mounts you and takes you balls deep inside her pussy.
"Make me big, honey... Like... really big..." she moans as she pumps her body on top of you.
"Okay... but... we're going to have to make another appointment after this one.