Here are eight times Mayweather and McGregor channelled the same look. So who do you think wore it best?
ROUND 1: THE BLUE PLAID SUIT
This round goes to Mayweather. Tailored to perfection, he pulls off the difficult no tie, no belt look with ease.
Not to mention the Derek Zoolander-inspired pose, which instantly picks up more points in our book.
Mayweather
McGregor
ROUND 2: THE RAGLAN TEE
Sorry McGregor, this round goes to Mayweather too for coordinating his outfit with his cash bands and even matching his shoes.
Take note, that's the kind of effort it takes to become a boxing champ.
Mayweather
McGregor
ROUND 3: THE MUSTARD TURTLE NECK
No one quite pulls off the mustard turtle neck like Conor McGregor does.
He may have cropped a fan out of this picture, but he still takes this round out in impeccable fashion.
McGregor
Mayweather
ROUND 4: THE ROBE
McGregor wins this round with his personalised Versace robe complete with metalic gold detailing.
Floyd may have his shoe collection in order, but he needs to follow fashion's rule number one: No sunglasses inside. Ever.
McGregor
Mayweather
ROUND 5: LOUIS VUITTON
This round has resulted in a tie. Neither contender gets top marks due to some classic fashion errors.
While McGregor gained points for his Louis Vuitton button down shirt, he lost them again by donning those flip up sunnies.
Meanwhile, Mayweather lost points for looking as confused as we are.
Mayweather
McGregor
ROUND 6: PINK SHIRT
It takes a real champion to rock the colour pink like Conor McGregor does which is why he's taken out round six with this confident fuschia choice.
McGregor
Mayweather
ROUND 7: THE BUTTON UP POLO
Mayweather, round seven is all you. But your win is largely due to McGregor's sandal choice. Actually, it is entirely due to McGregor's sandal choice.
Mayweather
McGregor
ROUND 8: THE SHIRTLESS DAD
McGregor wins the final round for not only looking great in these patterned shorts, but also for being a champion dad.
Mayweather appears to be having some serious fun with his daughter, but the colourful shorts are a swing and a miss.
McGregor
Mayweather
While McGregor may have taken out the title of Most Fashionable, with an impressive 5-8 win, only this weekend's battle will decide who is truly a knockout contender.
