Promoting the event on social media, McGregor uploaded a video featuring four ring girls.

Each wearing Bare Knuckle-branded bikinis, they wore wide smiles for the camera.

One said: “We’re here at BKFC 57 and we love Forged Irish Stout”.

They each blew a kiss towards the camera before turning and striking a pose.

McGregor, 35, posted the video, writing: “Watching my inaugural @forgedirishstout bare knuckle event tonight in Miami!

“Thank you ladies.”

McGregor also uploaded a bizarre selfie in which he stared blank-faced at the screen, not offering even a hint of a smile.

One fan commented: “Dawg you have a wife and kids.”

While a second wrote: “Oh you enjoying the show bruh.”

A third said: “Champ do what champ want.”

But a fourth asked: “What is that second picture?”

And another added: “Im stunned by this post idk what to react.”

McGregor has been with partner Dee Devlin since 2008, with the pair getting engaged in 2020.

They have four children together – Conor Jr, six, Croia, five, Rian, two and baby Mack, born in December.

McGregor has long been linked with a UFC return bout against Michael Chandler.

The duo missed out on a UFC 300 battle, however, and have seemingly been targeting a June date instead.

But recently asked if McGregor will in fact return in June, UFC president Dana White said: “No.

“When Conor’s ready to fight, you know we’ll announce it. That’s what we do.”

3Dana White recently updated fans on McGregor’s UFC return