Use Upgrader.

Putting her faith in the strange device, Jen pressed it against the bottom edge of her skirt. A green rectangle started glowing on the side of the device, and it started pumping some substance into the steel plate. As soon as it became empty, it fell off on its own to litter the floor.

"What?" — Jen asked. — "This doesn't make any sense so far. Oh, wait, here it goes."

She watched in excitement as the strict white line that marked the end of the skirt and the beginning of her bare legs, started to smudge itself. Instead of going up, however, it took a downward direction.

"Oh, no, no, no, no!" — she tried to get her knees away from each other, but the tight skirt was irreversibly getting tighter and longer until it stopped at about her middle calf.

Getting the opposite of what she expected, Jen predictably found walking like that even harder than before.

"That's just not fair. Why aren't there instructions on the device so I could know what I'm doing?"

Jen felt even more cheated out of her freedom when she discovered the second keyhole on her skirt that was telling her that the Upgrader's effect had to be undone separately. At the same time, the sensation of her hips pushed even closer together and with the dildo in the middle of it all only gained power, making it that much harder to think straight.

"We're so hot down there and so cold up there. What crimes did your hooters commit to deserve such attitude? Is it 'reasonable' to leave your sensitives out in the cold?"

The girl leaned onto one of the shelves and closed her eyes tightly. She needed a clear number 1 thing to do, or else it was going to get harder to keep new restraints away from her frame.