Serena Williams announces pregnancy and shows off baby bump at Met Gala

Serena Williams revealed her pregnancy at the Met Gala (Evan Agostini/AP)

Serena Williams has announced she is pregnant with her second child and showed off her baby bump at New York’s Met Gala.

The retired 23-time grand slam singles winner, who shares daughter Olympia, five, with husband Alexis Ohanian, confirmed the news on Instagram on the night of the fundraising gala, famous for its extravagant fashion.