This Miss BumBum 2018 competition has ended in a shambles after contestants resorted to fighting on stage following cheating allegations.

The fight was sparked by one contestant accusing the other of having a surgically enhanced derriere.

The eye-popping scenes unfolded on Monday shortly after Ellen Santana was crowned the winner for Miss BumBum 2018.The 31-year-old model and dancer was representing the northern Brazilian state of Rondônia in the competition.

But moments after she was declared the winner, she was physically stripped of her winner’s sash by fellow contestant Aline Uva from Rio Grande Do Sul, in the south of Brazil.

Uva, a 27-year-old massage therapist, was heard shouting that the competition was a farce and claiming that the winner’s bum was surgically enhanced.

She added: “I fulfilled all the rules of the game, my butt is real, but her butt is plastic!

“Miss Bumbum is a farce. Today I could prove all this.”

Organisers of the annual competition were forced to intervene to calm the frantic scenes and ensure the winner’s sash was handed back to Santana.

The Miss BumBum competition has been held annually in Brazil since 2011.It was founded by journalist and entrepreneur Cacau Oliver, and aims to crown the best buttocks in Brazil.

Commenting on the fracas, Oliver said the drama was “part of the contest”. The televised competition has 27 contestants who represent the country’s different states, with 15 women making it to the finals.