Tie her up (but only with her permission, of course)

The three halflings descend upon their unsuspecting victim with tape measures in their little hands.

"Hold still," Tammy says as she takes hold of Sally's left arm. Her associate, a blonde and slightly chubbier halfling takes Sally's right arm, while the third halfling, a skinny redhead, squats down at the naked human's feet.

Sally starts to giggle as they run their little hands with their little tape measures up and down her body. She's a ticklish woman, which is doing nothing to preserve her aura of (non-existent) authority with these thieves.

"We'll definitely need to make a few alterations," says the blonde to Tammy.

Tammy nods and winks. "Go get the thread," she tells the redhead, who smiles and then rushes out of the room. "We take great pride in our work, and want to ensure you get the best fit possible," Tammy tells Sally, as she looks up at the (to a halfling anyway) giant of a woman.

"I would accept nothing less!" Sally says as she snootily closes her eyes and turns her nose up, a gesture she's seen Hilda perform many times.

"And since you seem rather ticklish," Tammy says, an observation that makes Sally blush in embarrassment, " I think it would be best if we restrained you, you know, to make sure you don't laugh and screw up the measurement."

"Oh... uh..." Sally stammers.

"I mean, you want to look good... right?" Tammy asks as she looks right into Sally's nervous eyes.