Michelle Jenneke went viral in 2012 when footage of her warming up before a race hit the Internet.
But now the Australian hurdler has gone from warm to scorching hot, having posted a photo to Instagram of herself in a bikini, standing along a street sign and leaving little to the imagination.
See for yourself here:
Is Lindsey Vonn in trouble? Is Jenneke now the sexiest athlete on the planet?
Check out more bikini shots of the 20-year old below and decide for yourself:
And now relive the moments that put Jenneke on the attractive map, as she warms up set to music inserted by a YouTube user: