The Tottenham Hotspur Stadium erupted when Chris Eubank Jr. walked out with a surprise guest for his rematch against Conor Benn.
Eubank Jr. and Benn walked out to a thunderous reception for their main-event bout on Saturday.
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Benn walked out first with his father, Nigel Benn, by his side, coming out to Phil Collins' 'In the Air Tonight'.
Eubank Jr. then made his way to the ring, with Dr. Dre's 'Still D.R.E.' blaring out.
But people online couldn't believe the star fighter was flanked by rap legend 50 Cent, who rapped 'Many Men (Wish Death)' before transitioning to 'I’ll Whip Ya Head Boy'.
50 Cent was backstage with Eubank Jr. and shared a warm embrace with 'Next Gen' in his dressing room before walking him out.
Boxing fans loved his surprise appearance.
One X use wrote: "Getting 50 cent to do your walk on is pretty impressive mind."
A second said: "50 cent just coming out casually .. Benn deffo singing his songs in his head."
A third added: "Eubank walking out to 50 cent, nah he’s gotta win now."
A fourth commented: "Eubank walking out to Many Men with 50 Cent is Top 10 coldest moments of all time icl."
Another lauded: "Walking out with 50 Cent is just different levels man."
50 Cent, who was seated ringside next to Tony Bellew when the fight started, isn't the only star in attendance as a host of celebrities have flocked to London for Eubank Jr. vs. Benn 2, including singer Rod Stewart, actor Jason Statham, former footballer Thierry Henry and boxing star Terence Crawford.
Not to mention UFC fighter Michael 'Venom' Page, actor Pierce Brosnan and ex-Spice Girl member Emma Bunton.