'I don't think I can stand': Worrying scenes as frail Jessica Eye MISSES weight for UFC headliner versus Calvillo (VIDEO)

UFC fighter Jessica Eye cut an upset and shaky figure as she missed weight by a fraction for her flyweight main event showdown with Cynthia Calvillo in Las Vegas on Saturday night.

Eye tipped the scales at 126.25 lbs - just 0.25 lbs over the limit for non-title flyweight bouts - when she weighed in on Friday.

It is the second time Eye has failed to hit the mark after she challenged Valentina Shevchenko for the flyweight title in June.

After stripping down and stepping off the scale, a visibly shaken Eye said she was "done cutting weight" and could barely stand. 

The bout will still go ahead after Calvillo weighed in successfully at 126lbs, although Eye will forfeit 25 percent of her purse. 

Some MMA fans were quick to put the boot in on 'Evil' Eye, dragging up previous footage of her extoling the importance of making weight for a fight.

Headliner Eye - who boasts a 15-7 record and meets 8-1 fellow American Calvillo - was not the only one to miss her mark at Friday's weigh-ins.

Co-main eventer Karl Roberson missed weight by 4.5 lbs for pounds his scheduled middleweight bout against Marvin Vettori, meaning he will give up 30 percent of his purse to his opponent. 

Lower down the card, bantamweight debutant Zarrukh Adashev also missed weight for his bout with Tyson Nam fight, and will give up 20 percent of his purse.