She can hide in plain sight by switching places with Teddie

"Eureka!" Naoto exclaimed, her eyes widening as an idea suddenly occurred to her. "Pardon me, that really is a cliche, isn't it? But I think I have an idea. Teddie, if you were to shed your suit and go to shop for my new clothing as a boy, I could wear your suit to hide until Yosuke comes back!"

"You think that'd work? I know I make this bear bod of mine look fluid, dynamic, and bear-y handsome, but it's probably not a whole lot more comfy for you than that suit you've got on now," Teddy explained. "It's not made for normal people to wear, so you won't be able to see out of the eyes!"

"That's okay! It only has to get me out of sight. Please, I beg you: remove your suit!"

"O-Oh my, Naoto-chan! So forward!" Teddie giggled with rosy cheeks, feeling a little naughty at being asked to strip. "Well, if you really want to see that handsome boy again, I guess I can't blame you! Behold!" With a pop, the pretty, blond-haired form of Teddie split himself from the suit, lifting up the bear head and revealing his odd, billowy white blouse and black skinny pants. He stepped out, then held the neck-hole open for her like a gentleman. "Your bear-riage awaits, madame! Remember, this one zips on~"

Naoto nodded eagerly, then nearly dropped her current, half-formed outfit before fixing Teddie with a cross expression. "Teddie, I appreciate your chivalry, but I clearly intend for you to turn around while I step into that. In fact, it would be best if you'd go ahead and fetch my new clothes. I'll hide this old suit somewhere out of sight once I'm in your costume."

Pouting, Teddie crossed his arms behind his head and turned, trying to convince himself it was worth it to be nice to his friend at the cost of getting to see her underwear for once. "Fiiine. I'll be back!"

With Teddie headed off to the clothing department, Naoto sheepishly exited her suit, looking both ways for any customers as her bare feet exited and touched the carpeted floor. Her anxiety increased as she realized that there was indeed a camera over-head, pointed right outside the locker room... if she didn't address that tape later, Yosuke or one of his employees was going to have some very interesting late night viewing when they reviewed the footage. With a sense of urgency, she stepped into Teddie's supernatural bear suit and zipped the head on. The eyes remained white and the smile unmoving... it seemed only Teddie could manipulate that part.

"It doesn't matter," Naoto told herself, although the mystery of how Teddie manipulated this thing was tugging at her innate curiosity. "I'm just weathering the storm. I'm not pretending to be Teddie or imitating his behaviors; I'm just hiding as Teddie."

Shortly afterward, Naoto heard an ominous sound that let her know it wasn't going to be that easy...