He has her strip naked and pose.

"Okay... How about you strip?" he asked her.

"Sure, as you wish!" she replied giddily, undoing her dress and letting it drop, standing in just her black bra, matching panties, maid frill and her heels and socks. She then proceeded to kick her heels off and lifted a leg to pull off her sock, sliding it right off her foot and repeating with the other one.

Still smiling, she reached behind her back, and undid her bra, shucking it off her arms, and letting her boobs jiggle freely. Finally, she reached for the ties to her panty strings, and pulled, undoing the knots, and causing her panties to fall. She then took off her frill, and tossed it away casually.

Now naked, she looked at him cutely with her hands behind her back. "Does my body please you my Master?"

"You bet it does... Model it for me," Natsu commanded.

"I live to serve Master..." she cooed, placing her hands behind her head to jut her tits out first, holding the pose for fifteen seconds.

https://images2.imgbox.com/60/4a/jk9HWOLs_o.jpg

She then crossed her arms, pressing her tits up, and leaned forward to give him a good view, her expression making it clear she was having the time of her life.

She then got down on the floor, turning from him with a hand on her head as she looked back at him sultrily.