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.
More top news
A sailor has been rescued after two months lost at sea, during which he was forced to eat seagulls for survival.
Former Leicester City and England striker Frank Worthington is suffering from Alzheimer's disease, according to his daughter.
This is the sight that greeted one environmental conservationist - a deer with its head stuck in a light globe.