The 6-tier cake was made by Bree Miller, who spent 72 hours creating it, according to TMZ Sports. 

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Miller told TMZ Sports that she decorated the cake with 12 feet of Swarovski crystals.

Mayweather celebrated his birthday with a huge party in Los Angeles.

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Several celebrities attended the party, including Mariah Carey, who sang “Happy Birthday.”

Justin Bieber also performed.

“Money” Mayweather might just be the happiest 40-year-old on the planet.

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