Video: Kate shows off her baby bump at Buckingham Palace reception

The Duchess of Cambridge made her first public appearance since announcing her third pregnancy on Tuesday (Oct 10) at a reception to mark World Mental Health Day. Kate, who has been suffering from severe morning sickness, arrived at Buckingham Palace with Prince William and Prince Harry to honour mental health workers and advocates.

TAP FOR GALLERY Kate showed off her growing bump in a blue Temperley frock.

Prince George and Princess Charlotte’s mom appeared to be in good health, looking chic in an iris-hued lace dress by Temperley that featured scalloped edges, frilled sleeves and neckline and a contrast velvet neck tie.The 35-year-old completed her look by styling her glossy tresses down with her signature blowout.

The last time Kate was seen out and about was on August 30 when she toured the Princess Diana gardenaheadof the 20th anniversary of her mother-in-law's death. Kensington Palace announced in September that the Duchess and Duke are expecting their third child together. The palace also revealed at the time that Kate is suffering from hyperemesis gravidarum, as she did with her previous pregnancies. The mother of two's condition forced her to miss engagements, including her four-year-old son Prince George's first day of school.

It’s not surprise the Duchess chose to return to the spotlight on World Mental Health Day. Kate William and Harry are all advocates for mental health. In 2016, the royal trio launched their mental health campaign, Heads Together.

Prince William, Kate and Prince Harry's quotes on mental health

While the expectant royal was away attending to her sickness, she made an appearance in a video for her patronage, the Anna Freud National Centre for Children and Families, aimed at children’s mental health. In a statement, the royal mom-of-two said: "As parents, we all want our children to have the best possible start in life. Encouraging children to understand and be open about their feelings can give them the skills to cope with the ups and downs that life will throw at them as they grow up. It's important that our children understand that emotions are normal, and that they have the confidence to ask for help if they are struggling.”

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