We don't know what it is about the South American modelling industry, but there seems to be a constant correlation between footballing success and nudity.
It's become vaguely inevitable that wins for international sides will lead to somebody stripping - like it or not, that's just how it is. However, it seems that the incessant nakedness has now spilled over into club football.
That's what we're taking from this pledge by Brazil's Miss BumBum 2015, anyway. The lady in question, Suzy Cortez, made a vow to strip off at the weekend if her beloved Sao Paulo beat league rivals Goiás and consequently qualified for the prestigious Copa Libertadores.
It's a big shout to make, really. We probably wouldn't be too keen to get naked if our favourite teams got a decent result, especially not if we had a massive Instagram following.
Nonetheless, Suzy posted this pic on her Instagram promising to pose without the ball if Sao Paulo claimed victory - all in the name of encouraging the team, apparently.
Sao Paulo went on to win 1-0. Whether this has anything to do with Suzy's pledge, we couldn't possibly say.
Accordingly, Suzy has decided to fulfil her promise.
The result is this picture featured on Globo.com. It's worth remembering that Sao Paulo only qualified for the Copa Libertadores, so God knows what Suzy will do if they actually win the ruddy thing.
That's Suzy's reward for Sao Paulo's fourth-place finish in the Brasileiro Série A, then.
Nakedness in exchange for fourth place? Don't get any ideas, Arsenal fans.