UFC Champion and his son are getting ready for the big night

Just a few days before the fight, McGregor and his son were pictured being measured by the luxury shirt and suit maker David Heil.

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Heil, creator of the David August brand made the popular ‘Eff You' suit which McGregor wore to the first press conference ahead of the fight.

It seems he won’t be making another suit filed with profanity as McGregor’s son is seen being helped to try out a blue three-piece suit.

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The 28-year-old UFC star was pictured making arrangements on his wardrobe at the expensive penthouse suite he and his family are staying before the fight.

His long term girlfriend and mother of his son, Dee Devlin is also present.

McGregor is set for his biggest payday with about $100 million to be earned from the fight against Mayweather.