Former road race world champion Lizzie Deignan has announced she is expecting her first child in September.

The 29-year-old from Otley, who has also won world team pursuit and team time trial titles, shared the happy news today.

"Me and @PhilipDeignan are delighted to announce the very exciting news that we are expecting our first child in September," Deignan said on her official Twitter account.

The reigning Commonwealth Games champion had already previously announced that she would not be defending her road race title next month at the Gold Coast Games.