Ooops! Venus Williams accidentally gives away sex of sisters baby

Venus Williams has given away the sex of her sister Serena Williams’ unborn baby – despite Serena wanting to keep it a secret.

The tennis champ let slip the big secret yesterday at the French Open in a post-match interview after beating Kurumi Nara.

Talking to Eurosport after the match, Venus seemed to heavily hint Serena is expecting a girl in the autumn after referring to the baby as “she”.

“I want to be known as the favourite aunt,” she went on.