Unobtainable clothing glitch

Somehow in my save when leveling up a mii all the clothing that would be worn by children can be given to your mii. I gave my mii the baby wrap, which lead to my ds glitching terribly after leaving her room, leading to the screen blacking out every couple of seconds momentarily. I was lucky to get this screenshot of it, another one of my miis has an item of toddler clothing which hasn’t seemed to affect my game in any way. I was wondering if anyone else has experienced this weird bug