Middleton, who returned to her royal duties exactly one week ago to greet school children at a wildlife garden event, looked as stunning as ever for her latest engagement.
eBay revealed that searches for tailored maternity coats more than tripled in November 2017, after Kate and Prince William announced they were expecting their third child, while searches for British designer Jenny Packham increased two-fold following Kate's appearance with newborn baby Louis outside of the Lindo Wing, wearing a red smock dress by Packham.
She added her own artistic touch to an original piece by Dairo Vargas, a contemporary fine artist from Columbia, who created a painting inspired by the day's events.
The royal couple arrived to attend multiple presentations on case studies of active mental health programs and also met with young people to speak about their experiences with mental health.
The project's founder Dixon Chibanda said: "Bringing our Friendship Bench to London helps show leaders and campaigners how we can all empower communities to tackle the global gap between mental health problems and the treatments available".
The duchess first showed off the Emilia Wickstead dress on a trip to Germany a year ago.
Erdem has become somewhat of a go-to designer for members of the royal family, with the label being the favourite to design Princess Eugenie's wedding dress.More news: 'I don't remember': Trump mocks Christine Blasey Ford's testimony
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