Sometimes celebrities really do hang out together: Soccer champ Cristiano Ronaldo got palsy with UFC fighter Conor McGregor in Las Vegas this weekend, when the two premier athletes showed off their fine forms.

On Sunday, Ronaldo posted an Instagram with McGregor in the ring—oddly tagging it with an emoji that says "Top." (Ahem.)

McGregor, who just posed nude for ESPN magazine's Body Issue, posted one as well—we're actually not sure who's more shredded.

And both men attended Jennifer Lopez's 49th birthday party over the weekend, as well.

Both Ronaldo and McGregor also posted some poolside pics—with McGregor joking he was going to out-tan the soccer star.