MISS BUMBUM: SHINDANO LA KUMSAKA MREMBO MWENYE MAKALIO MAZURI NCHINI BRAZIL

Rear of the year: Dai Macedo won Miss Bum Bum 2013 with her 42in bottom (

Eliana Amaral, from Pernambuco in north Brazil, was awarded second place while bringing up the rear was Jessica Amaral from the central northern region of Para who came third.

Ms Macedo, an administration student, had been embroiled in controversy leading up the event when she suggested on social media that the result would be fixed to give the title to rival Mari Sousa.

The contest was plunged into further chaos when rivals accused Ms Sousa, 25, and Ms Amaral, 24, of paying thousands of pounds to the event's judging panel for the right to come first and second. 

Brazil's O Dia newspaper reported that Ms Amaral, a law student representing the northeastern state of Pernambuco, had allegedly paid organisers around £18,000 for second place

Bums the word: Dai Macedo is awarded the accolade of having the best bottom in Brazil

Cheeky: Miss BumBum has a huge following in Brazil and around the world

The contest was plunged into chaos when rivals accused candidates of paying bribes

The O Dia newspaper also alleged that Ms Amaral's impressive derriere is not entirely natural - which would eliminate her from the competition - and that an X-ray she says proves she has no implants in her bottom is fake.

Contestants took to Twitter to insult each other in the lead up to the competition.

Speaking after her win, Ms Macedo said: 'I'm all emotional. I didn't expect to win.

'All hell broke loose on social media sites but now I can say the contest was real.'

Strike a pose: Dai Macedo struts down the catwalk after being crowned Miss BumBum 2013

Controversy: Contestants took to Twitter to insult each other in the lead up to the competition

Dramatic: Dai Macedo impressed judges with her routine and 42in bum 

The new Miss Bumbum indicated her backside had not always been such a marketable asset.

'It isn't 100 per cent natural. I had a butt lift. I always had a large backside but liposuction improved it,' she said. 

The brunette said she hoped one day to become a television presenter.

Macedo also won 5,000 reais ($2,100)  and will also net ten times that in advertising contracts.

The Miss Bumbum contest begins with 27 candidates chosen to represent each of Brazil's 26 states and the federal district Brasilia.

The women are then whittled down to a final 15 in an online eliminatory round, before a winner is chosen by a judging panel of six women and five men.

Second place has also become a coveted position after previous years' runners up have achieve greater fame than the actual winners.

The runners up look on as Macedo is unveiled as the competition winner

There were rumours of vote rigging concerning other contestants, but that didn't stop Macedo from winning

Putting controversry behind her: Macedo stands to make ten times the amount she received for first prize