Two sisters so close they make porn films together have become deadly rivals as both strive to win Brazil’s Miss BumBum contest.

The event decides which girl in Brazil is judged to have the sexiest rear end in the country.

Previous winners have gone on to land huge showbiz and social media careers and their pick of celebrity boyfriends.

Now sisters Larissa, 24, and Rafaela Sumpani, 21, both have their sights set on this year’s title in the contest on 18th August.

The raunchy pair often appear together in OnlyFans porn videos, sometimes with up to five other women.

They say their relationship gives them an edge over rivals and they call themselves the Kardashians of porn.

Larissa – who represents Minas Gerais state in the contest – explained: “We’ve already done it with five other women. It’s better for us because scenes with just one more person are very static.”

She added: “A lot of people think it’s just marketing, but we were born from the same father and the same mother.

“We don’t interact in the content we record together.”

Little sister Rafaela – representing Bahia State – explained: “Sometimes the two of us are dancing, one next to the other, in a more sensual way.

“When there is only one guest, we interact with him.”

The sisters say that in three years they have made more than more than BRL one million (GBP 160,400) from their erotic content.

Rafaela said “We fought a lot when we were younger. Today we reached a level of maturity. We talk a lot and we see a great opportunity for both of us.”

She admitted it is often hard to find male performers for their videos.

Almost 90 per cent of them “blow them off”, Rafaela said, and she suspects the idea of two sisters makes them nervous in bed.

Rafaela explained: “Perhaps the guy arrives believing that he needs to perform a lot.

“He thinks, ‘Wow, she must have sex with a lot of people, or she must have sex with a lot of actors. I have to be very good’.

“People think a lot and forget about pleasure.”