Celtics' Jaylen Brown LOSES brand new NBA championship ring during parade... as he offers fans a 'big reward' for their help

Celtics' Jaylen Brown LOSES brand new NBA championship ring

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Celtics star Jaylen Brown has already lost his NBA championship ring, and is offering fans a reward for their help as he scrambles to get the hardware back.

Brown was named Finals MVP after he led the Celtics over the Mavericks in a series-clinching Game 5 win on Monday.

But the forward has apparently lost his ring just days later during the team's championship parade on Friday, as he shared with fans the following night.

The 27-year-old posted a picture of the jewelry on his Instagram story, offering a 'big reward' if they were able to locate it.

He appeared to delete that story before posting a closer-up look of the ring on his hand.

'Reward for whoever finds this ring lost it at the parade,' he wrote with an upside-down smiley face.'

In one photo from the parade, Brown could be seen atop one of the parade floats pumping his fist, seemingly without the ring on either of his hands.

The Celtics held a raucous parade in front of their home fans on Friday, as Sam Hauser appeared worse for wear while on one of the floats.

Celtics head coach Joe Mazzulla was also full of energy as he pumped out the Boston crowd.

Brown was hugely impressive in the postseason as he averaged 23.9 points, 5.9 rebounds and 1.2 steals per game.

He also shot 51.6 percent from the field, the best mark of his career in the playoffs.

If a fan is able to find and return Brown's rind, they can certainly expect a decent reward.

The Celtics star signed a five-year, $286million extension with the team last year and will earn just under $50million next season.