By Christian Smith

Ace tennis player, Serena Williams today announced to her fans, through snap chat that she is to become a mother.

The 35-year-old, who has won 23-time grand slam, told them she was 20-weeks pregnant.

Ms Williams won the Australian open in January, making her world number one in the sport.

The American along with her sister Venus have dominated the sport for many years.

She recently got engaged to Reddit co-founder, Alexis Ohanian.