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 Prince of Wales was among dignitaries who paid tribute to fallen officers at the National Police Memorial Day service.
A Katie Chapman own goal and a Toni Duggan penalty were enough for Nick Cushing's ladies to claim their first league title.
The Spaniard has overseen 10 straight victories since taking charge at the Etihad Stadium, including a derby win over Manchester United.