Quote Originally Posted by Heavy D
From the UFC website, under the rules section:

Mandatory Equipment: [Top]
Competitors may only use UFC and commission approved 4-6 oz gloves, designed to protect the hand but not large enough to improve the striking surface or weight of the punch.
Commission approved MMA shorts and kickboxing trunks are the only uniforms allowed. Shirts, gis and shoes, and the problems they present for grabbing are not allowed.
OH SHIT

that actually changes everything, gracie is in trouble, that guy needs that gi, he isnt that strong and the gi is what he used to perform submission maneuvers