Kate Middleton, 35, and Prince William, 35, announced they were expecting their third child together at the beginning of September.
The Duchess has been suffering with severe morning sickness, known as hyperemesis gravidarum, like with her two previous pregnancies.
Kate’s condition early on in her pregnancy meant she was unable to attend public events with William.
But she now appears to be feeling better, having made her last few appearances.
Her most recent sighting was at the Royal Festival of Remembrance on Saturday which takes place every to commemorate all those who have lost their lives in conflicts.
The event took place at the Royal Albert Hall in South Kensington, London.
Kate attended the event without Prince William who was instead present at the Wales V Australia rugby match.
The Duchess concealed her baby bump in a black velvet coat dress.
The coat was collarless and cinched in at the waist, carefully hiding Kate’s growing tummy.
She completed the look with a pair of sheer black tight, black heeled court shoes and marked the occasion with a large poppy, pinned to her left breast.
Kate’s make-up included a brown smoky eye and peach-coloured blusher and she wore her hair in large curls.
The Duchess was not the only royal present at the event.
The Queen and Prince Philip also paid their respects, alongside Prince Charles and Camilla.