Conor McGregor and Dustin Poirier both make weight for UFC 257 clash in Abu Dhabi

Fight is rematch of 2014 encounter in which Irishman prevailed by first-round TKO

Dustin Poirier, left, and Conor McGregor face-off ahead of their bout at UFC 257 at Etihad Arena in Abu Dhabi. Getty

American fighter Dustin Poirier and Conor McGregor of Ireland at the UFC 257 press conference at Etihad Arena ahead of their bout on Sunday. Courtesy DCT

New Zealand's Dan Hooker, left, and Michael Chandler of the United States ahead of their bout at UFC 257. Getty

Dan Hooker and Michael Chandler at the UFC 257 press conference at Etihad Arena ahead of their bout on Sunday. Courtesy DCT

Dustin Poirier at the UFC 257 press conference. Courtesy DCT

Michael Chandler speaking to the media during the UFC 257 press conference. Getty

Dustin Poirier at the UFC 257 press conference at Etihad Arena. Courtesy DCT

Michael Chandler at the UFC 257 press conference. Courtesy DCT

Dustin Poirier speaks to the media during the UFC 257 press conference at Etihad Arena. Getty

Conor McGregor during the UFC 257 press conference. Getty

Dan Hooker during the UFC 257 press conference. Getty

Conor McGregor during the UFC 257 press conference at Etihad Arena. Getty

Dan Hooker at the UFC 257 press conference on UFC Fight Island. Courtesy DCT

Conor McGregor and Dustin Poirier have made official the much-hyped headline event to Sunday's UFC 257 after the two weighed-in on point in Abu Dhabi on Friday.

McGregor, who makes his return to the octagon from the first time in more than a year, was first to take the scales at W Abu Dhabi – Yas Island, in a show of real intent.

The former two-division champion weighed in at 155 lbs on the button, before declaring “championship weight” and beating his chest. Fellow lightweight Poirier was next up, weighing 156 lbs.

The clash, a rematch of the 2014 encounter in which McGregor prevailed by first-round TKO, tops the bill at UFC 257 at Etihad Arena. The event brings to a close the three-show Fight Island Triple Header in the capital.

The eagerly anticipated penultimate bout, also lightweight, between debutant Michael Chandler and No 6-ranked contender Dan Hooker is official, too.

New Zealander Hooker came in on the scales at 156 lbs, with Chandler, a three-time Bellator lightweight champion, later weighing in the same.