A little girl's one piece

Jon was wearing a girl's one piece bathing suit, red with white hearts. It covered Jon's entire torso, at least. though it was so short on the legs that Jon would've been able to clearly see the bulge of his crotch under the fabric if not for the frilly skirt attached around his waist. How did he get into these clothes, which so obviously belonged to a girl? And by girl's he meant, a little girl. this frilly thing was clearly meant for a small child, only sized to fit him Jon was barefoot, naturally, but as he really wished he could at least find some sneakers before he ran as fast as he could to Karyn's house for help.