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Conor McGregor says he has 'no beef' with Machine Gun Kelly: 'I certainly don't fight little vanilla boy rappers'

Megan Fox and Machine Gun Kelly were the stars of Sunday's 2021 MTV Video Music Awards red carpet, with daring red carpet looks and attention-attracting spectacle.

Fox, 35, wore a sheer Mugler gown with crystals over an embellished thong and nude corset bra on the red carpet for Kelly's VMA debut. The outfit seemingly channeled Rose McGowan’s famed "naked" dress from the 1999 VMA Awards show.

Kelly (real name Colson Baker, 31) showed off his final make-up touches on Instagram Stories before hitting the red carpet. The rapper went bold in a bright red metallic suit with pearl accents on his face.

Kelly discussed how he collaborates on fashion with Fox for red carpet appearances. "It's 50/50," Kelly said during the VMA Awards pre-show. "This one she took the lead and I get the pleasure of having her on my arm all night."

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"She's beautiful," Kelly added.

Kelly later posted photos of the two from the red carpet on Instagram with the caption, "I found a mermaid."

Machine Gun Kelly and Conor McGregor tussle on red carpet

The red carpet was not all about love. Kelly and Irish MMA fighter Conor McGregor appeared to scuffle before going backstage at Brooklyn's Barclay Center.

Photos and videos appear to show Kelly and McGregor, 33, being held apart by security, and with Fox shielding Kelly. 

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McGregor's press representative told USA TODAY via email:

"It’s unfortunate that MGK’s security overreacted. Conor and Dee enjoyed the performances."

Kelly's representative and MTV VMA Awards reps did not respond to USA TODAY's requests for comment.

Machine Gun Kelly (center top) and Conor McGregor (center bottom) attend the 2021 MTV Video Music Awards at Barclays Center on September 12.

McGregor, who attended the awards with wife Dee Devlin, told USA TODAY before the fracas that he was presenting an award for which Justin Bieber was nominated.

"He's my friend. JB is doing some great things this year. I'd like to see him win it," said McGregor. "(The VMAs crowd) is a way different audience than I'm used to in the fight game. The last time I came here to Barclays Center, I came in through the side door. This time, I'm back on the red carpet."

Neither Kelly nor McGregor alluded to the fracas during their moments onstage.

McGregor told Entertainment Tonight later that "absolutely nothing" happened.

"I don't know. He showed up, and I don't know. I don't know the guy," McGregor said. "Nothing happened with me, I only fight real fighters, people that actually fight... I certainly don't fight little vanilla boy rappers. I don't even know the guy. I don't know anything about him, except that he's with Megan Fox." 

On Tuesday, McGregor told TMZ he had "no beef" with Kelly.

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Megan Fox refers to Machine Gun Kelly as 'Daddy' and 'future baby' daddy

As if there were not enough couple news from the evening, Fox posted an Instagram gallery during the show of the couple in their stunning red carpet attire.

"Daddy's gonna win a VMA," Fox wrote in the caption.

Kelly did win the award for best alternative video for "my ex’s best friend" 

Fox used the "Daddy" term a second time as she took the VMA stage with Kourtney Kardashian to introduce their respective partners — Kelly and drummer Travis Barker — to perform "Papercuts."

"New York, I need you to get extra loud for our future baby daddies," Fox said, before Kardashian yelled "Machine Gun Kelly and Travis Barker!" 

Fox, who has three children with ex-Brian Austin Green, did not elaborate further on the comments. Press representatives for the couple did not respond to requests for comment.

Megan Fox attends the 2021 MTV Video Music Awards at Barclays Center on September 12, 2021.

MGK and Megan Fox: Couple ready for the red carpet

A year after romance rumors were sparked by Fox's appearance in Kelly's music video "Bloody Valentine," the couple stepped out for a PDA-filled evening at the Billboard Music Awards in Los Angeles on May 23. 

On stage, Kelly expressed gratitude for his loved ones who helped him succeed, including Fox: "To my twin soul who showed me love," he said while pointing to his girlfriend in the audience.

Contributing: Ralphie Aversa