In the Trap 2/... (Patreon)

"She turned around, presenting her impressive backside, which she then tried to squeeze into the already occupied elevator! With each inch gained, the larger girl's butt loomed closer, expanding like an awe-inspiring mountain range". 

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When I finished the picture, I decided to add a transparent girl as a background to show the difference between the two from this angle. It seemed like a good idea to me, but it's up to you to decide :)