In his fight against Aldo, Conor grew into his frame. Though he was still lean he packed on a significant amount of muscle mass.
The first fight against Nate Diaz at UFC 196 saw Conor McGregor weigh-in at 168-pounds. This was his first fight at welterweight.
Conor had to make significant changes to his body to fight as a professional boxer against Floyd Mayweather. He weighed in at 153-pounds for the fight
'The Notorious' looks leaner and more muscular than he ever has as he prepares for UFC 257