Chris Brown & Usher brawl SHOCKS Twitter

Usher threw a lavish birthday party for Chris Brown on his 34th birthday.

The latter, in return, reportedly gave a "bloody nose" to the host on Friday, May 5, outside Skate Rock City in Las Vegas.

As per Hollywood Unlocked, the 34-year-old "visibly drunk" approached Teyana Taylor at the party, but she ignored his moves.

This infuriated the Breezy hitmaker, and sensing the tension, the Good Kisser singer intervened to cool him.

It reportedly set him further off as he took aimed at the 44-year-old, calling him a "coward," and left the party.

Afterward, the matter escalated when the Texas native confronted the R&B singer for his behavior on his tour bus outside the venue.

Then came the fight, where Brown and his crew attacked Usher, as spilled by a source.

Interestingly, before the reported fight, the pair were seen in a jolly mood as the Texas native led a 'Happy Birthday' chorus to Brown.

Meanwhile, Twitter was shocked, as many users were astonished by the alleged encounter.

"Until I see the footage of Chris Brown and Usher, I Ain’t Believing ****," one user commented.

Another chimed in, "Now why are they saying Chris Brown jumped Usher?!"

Uhhh, Chris Brown really fought Usher at the birthday party Usher threw for him?! Tell me that’s not true," a third added.