Rihanna heckles Kevin Durant, dabs on Golden State Warriors fan

June 2 (UPI) -- There were plenty of celebrities at Game 1 of the NBA Finals, but Rihanna may have earned the most attention for her passionate cheering and booing.

The music star is notorious for her LeBron James fandom. But like most Cleveland Cavaliers fans, she was disappointed in the team's 113-91 loss to the Golden State Warriors on Thursday at Oracle Arena.

She voiced that frustration several times during and after the game.

Rihanna arrived at the contest in the first quarter. Television analyst Jeff Van Gundy announced her presence on the air, saying "Rihanna just walked in front of me."

In the fourth quarter, Rihanna bowed to James from her courtside seat. Before sitting, she engaged with another fan, proceeding to dab at them and exchange a few words.

She also cupped her hands over her mouth in a shouting motion as Kevin Durant lined up at the foul line. Spectators believed she was yelling "brick" for Durant to miss the free throw. After making it, Durant glanced in her direction.

After the game, a reporter from Cleveland 19 filmed Rihanna saying "it doesn't matter [expletive]," as she passed the Cavaliers' locker room.

Kevin Hart, Jay Z, Marshawn Lynch, Bill Simmons and several other celebrities and athletes attended the contest.

The Mercury News reported the average price to attend Thursday's series opener was more than $1,850. Tickets for Game 2 could be had for around $510, as of Friday morning. Courtside seats like Rihanna's cost about $10,000 on some sites. Vivid Seats has Game 2 tickets for $596.50, with a median price of $1,514.10. That site is selling courtside seats for $2,993.

The lowest ticket price for a potential Game 7 in Oakland is currently $878, according to Time.