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Duchess Kate makes 1st public appearance since announcing 3rd pregnancy

The former Kate Middleton — and her adorable baby bump — celebrated World Mental Health Day at Buckingham Palace.
/ Source: TODAY

The Duchess of Cambridge — and her adorable baby bump — made an appearance today at an event celebrating mental health.

Buckingham Palace hosted the event in honor of World Mental Health Day. It was Kate's first public appearance since announcing her third pregnancy last month.

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Princes William and Harry first celebrated the day with a reception at St. James's Palace honoring the people behind the Heads Together campaign, which urges more conversation about mental health. They were later joined by Kate for the reception at Buckingham Palace honoring people who work in the mental health sector in the U.K.

Prince William and Duchess Kate celebrate World Mental Health Day at Buckingham Palace.Heathcliff O'Malley / Reuters

The duke and duchess, along with Prince Harry, are advocates for mental health, often participating in campaigns or speaking up about the cause.

Is that a ... baby bump!? The former Kate Middleton announced her third pregnancy last month. Heathcliff O'Malley / Getty Images

Royal fans were surely pleased to see the duchess, who is known to suffer from hyperemesis gravidarum, a severe form of morning sickness. (She's previously had to cancel planned engagements because of the illness.)

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The 35-year-old mother of two wore a light blue midi dress with black details, from Temperley London, and black high heels.

We hope this means the duchess is having a more comfortable pregnancy this time around, and we're happy to see her out and about — especially for such an important cause!