The Duchess of Cambridge will present the BBC's Sports Personality of the Year award and the lifetime achievement honour tonight, St. James's Palace said.
Catherine has not been seen in public since leaving the King Edward VII's Hospital in London on December 6.
She received three days of treatment for a condition known as hyperemesis gravidarum, which leaves expectant mothers so ill they cannot keep food or liquids down.
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The Duchess of Cambridge today made her last public appearance before the birth of her second child, with the Duke saying "any day now".
The tomb that houses Richard III's coffin has been revealed in Leicester Cathedral.
Launching Plaid Cymru's campaign, leader Leanne Wood, says the general election offers Wales an "unprecedented opportunity" for change.