Mayweather has stayed true to his nickname by posting online pictures of a series of winning bets that earned him nearly $1 million.

After beating Manny Pacquiao to earn a reported $180 million in boxing's richest ever fight in Las Vegas on May 2, the American added $827,000 to his fortune gambling on a combination of NBA games and the bout between middleweight champion Gennady Golovkin and Willy Monroe.

 

 The 38-year-old's social media accounts -- he has 7 million followers on Instagram and over 6 million on Twitter -- are a testament to his love of conspicuous consumption, detailing his devotion to luxury goods collection: from private jets to jewelery, sports cars and yachts.

Mayweather isn't the only celebrity gambling huge amounts of money.

In a radio interview in March, American rapper 50 Cent said he would bet $1.6 million on Mayweather to beat Pacquiao, saying he didn't have any doubts that "Money" would win at the MGM-Grand in Las Vegas.

And actor Mark Wahlberg reportedly made a $250,000 bet with rapper P. Diddy that Pacquiao would win.