Some of his suits are Martin Greenfield M2M, but he mostly wears Brioni (they provided the suits for The Apprentice) off the rack.
Given his size, gait, and posture, he needs bespoke or tailor made to fit him well. But, he's cheap with a cheap man's eye for fancy.
And yes, I read @dieworkwear religiously. Sue me. 🤣
@CanisPundit I was always hoping for an interview of the tailor who took his measurements for this abomination of a tux. They had to know what they were doing.