Kate is ready for summer in graphic Banana Republic skirt

The Duchess of Cambridge, née Kate Middleton, was ready for warmer weather on Monday morning (May 16) as she stepped out for an official engagement in a chic and summery ensemble.

The royal paired a fluttery blouse with a graphic-printed midi skirt and accessorized the look with navy suede pumps and a navy envelope clutch. The skirt is a $195 number from Banana Republic, while the blouse is $540 from Goat.

TAP TO VIEW FULL GALLERYKate rocked the summer look

Kate's hair looked stunning, her signature Chelsea blowdry as bouncy and glossy as ever. Kate was teaming up with her husband Prince William and Prince Harry to introduce the Heads Together campaign at the iconic Queen Elizabeth Olympic Park.

SEE KATE, WILLIAM AND HARRY'S BEST MOMENTS AS A TRIO

The project aims to end stigma on mental health – a cause that William, Kate and Harry champion – as well as change the national conversation on mental wellbeing.

The $195 skirt from Banana Republic

It wasn't long before the mother of two bonded with a group of youngsters who were sat at a Place2Be table – the children's charity of which Kate is patron.

Prince George and Princess Charlotte's mum was pictured chatting to the schoolgirls and entertaining them with toy puppets.

Place2Be is just one of the seven charities that are involved in the "Heads Together" campaign. At another stand promoting Mind charity, Kate tried her hand at boxing and giggled as she picked up the technique. The charity encourages physical exercise for mental wellbeing.

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