In the most recent episode of dragon ball super (episode 115) we were shown the new fusion; Kefla.
This fusion was achieved by the use of Potara earrings. But from what I remember items and such weren't allowed. Otherwise universe 7 would bring a lot senzu beans for survival. Potara earrings aren't items that belong to the fighters and are therefor external. Isn't the use of this against the universal tournament rules?