The Jamaican gold medallist's girlfriend of two years, Kasi Bennett, has been cheering on her man via Twitter during the Rio Olympics, but it appears he found another woman to celebrate his 30th birthday with after partying at a club in Barra de Tijuca in the early hours of Sunday (21Aug16).

Jady Duarte, 20, reportedly sent two telling snaps of herself in bed, cuddling up to the topless sprinter, to her friends via the WhatsApp messaging service early on Monday (22Aug16), and they were leaked online.

One of the images shows Usain hugging Jady from behind, as they pose for the camera, while in another shot, the birthday boy appears to kiss the student on the cheek.

Duarte has since opened up about her night with Usain, claiming she was initially unaware she had bedded a famous athlete - and now she is embarrassed their encounter has been made public.

"It's very negative," Duarte reportedly told local paper Extra of the public response to the pictures. "I never wanted to be famous, I'm dying of shame."

Meanwhile, it has since been revealed she isn't the only woman Bolt got intimate with during his night out - photos published by show him passionately kissing a mystery brunette in the club, hours before going home with Duarte.

Bolt has yet to comment on his apparently bad birthday behaviour.