5 biggest names spotted in a UFC audience

#4 Justin Bieber

YouTuber-turned-pop sensation Justin Bieber is no stranger to combat sports. At one point, he was close to Floyd Mayweather Jr. and even accompanied the boxing great to the ring during the latter's walkouts.

Thus, it is no surprise that Bieber has been seen in attendance at MMA events. He was most famously sighted at UFC 263.

While the main card was headlined by Israel Adesanya and Marvin Vettori, the Canadian singer was seen springing to his feet — as did most spectators — when Nate Diaz, after being thoroughly dominated by Leon Edwards for the better part of five rounds, rocked 'Rocky' with a right jab-left straight combination.

Alas, Diaz was unable to capitalize on that moment, ultimately losing the bout via unanimous decision.

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#3 Madonna

Few artists are as iconic or as controversial as Madonna has been throughout her career. Like Prince and Michael Jackson did prior to their untimely deaths, Madonna is a musical and fashion icon with generational staying power.

How she has maintained her cultural revelance across generations is anyone's guess, but the pop legend has a varied range of interests.

Among those interests is MMA, or at least it was during the height of McGregor's popularity. She was seated in the front row when 'The Notorious' challenged Eddie Alvarez at UFC 205 for the lightweight title in his successful bid at becoming the promotion's first simultaneous two-divisional champion.

Like many celebrities who turn up for McGregor's pay-per-view events, Madonna has not been spotted since.