PRINCE Harry was pictured in the LA Rams' locker room holding their Super Bowl trophy after watching the game with Princess Eugenie.
The Duke of Sussex inspected the Vince Lombardi Trophy while wearing an LA Super Bowl cap.
He also chatted with the team's owner Stan Kroenke, who also owns Arsenal FC.
The Rams shared the pictures on Twitter, writing: "Feelin' like royalty."
Sports writer Peter King said the Prince visiting the winners in their locker room signified how "football has been revived" in LA.
He told The Dan Le Batard Show with Stugotz: "The most interesting thing to me is how in LA football has been revived.
"I missed him last night but he was in the Rams' locker room. Prince Harry was in the locker room hanging out with the Rams.
"Cardi B was in the building last night at this party. It's just when you win in sport, there are crazy things that happen to your team.
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"The Rams are winning, they are in LA, people love them.
"I just saw a city and a region that for deceased has ignored pro football and now is in love with pro football."
Mr King also wrote in his column: "Football in L.A. is back, in a very big way.
"Prince Harry was in the Rams' locker room post-game, and now, Cardi B and Snoop Dogg were on the way to the party.
"This was a night for celebrating the improbable."
Prince Harry left wife Meghan Markle behind on Sunday to attend the event with cousin Princess Eugenie.
And he also met with country singer Mickey Guyton, 38, who tweeted a picture of them together.
She wrote: "He was just lovely. I even curtsied in my track suit."
Prince Harry has previously gone to sporting games and congratulated players afterwards.
He shared a beer with South Africa's rugby players after beating England in the World Cup final in November 2019.
At the Super Bowl, the Prince sat with his royal cousin in a private box at LA's SoFi Stadium on Sunday night as the Cincinnati Bengals took on the LA Rams, losing 20-23.
The cousins - who are famously very good friends - enjoyed half-time entertainment from hip-hop legends Dr Dre, Snoop Dogg and Mary J Blige.
The game was also attended by a whole host of other celebs, including Kendall Jenner, Ryan Reynolds, LeBron James, Kevin Hart, Charlize Theron, Rebel Wilson, Ellen DeGeneres, and Justin and Hailey Bieber.
The NFL UK Twitter account shared a picture of the sporty royals, captioned: "Prince Harry and Princess Eugenie in the house at #SBLVI."
But some social media users initially mistook Eugenie, 31, for Meghan Markle, 40, who lives nearby to the Los Angeles stadium with Harry, 37, and their two children, Archie, two, and baby Lillibet.
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It is unusual that the red-headed Prince is spotted out and about without his American-born wife after the Sussexes dramatically quit royal life two years ago.
The couple packed up and moved into an £11 million California mansion after stepping down as senior working royals in a bid for more privacy.