Hisoka:
Crop tops!!! You always wear his crop tops whenever you're just lounging around the house and he thinks you look adorable in them. Whichever he isn't currently using, you like to wear with either shorts and sweatpants. Knowing him, he's gonna find a way to provoke you about it. He would sneak up behind you and wrap his arms around your exposed waist and tell you how adorable you look, wearing his clothes, but that you'd look better wearing nothing.
(A/n: Smooth, Hisoka....real smooth -_-)

Illumi: Doesn't exactly understand why you want to wear his clothes but complies anyways because he can tell you enjoy it. He would prefer that you don't wear anything he plans to wear, so he gives you some of his old jackets to wear. Those jackets just aren't the same because they don't smell like him! "Why would you want something like that?" Even after explaining, Illumi still doesn't exactly get it but gives you some of his pajamas to wear which are some t-shirts and sweatshirts.

Chrollo: Nothing feels more badass than that jacket he has. Whenever he isn't paying attention, you steal it from him and put it on. It's a little bit big on you but you don't mind. When you put the jacket on, you prance around the hideout, acting like him, which he thinks is very cute. After you have your fun for a while, he pulls you into his lap and kindly asks for his jacket back.