Kate Middleton in Green Eponine Dress, LK Bennett Black Lace-Up Boots

When it comes to shoe style, Kate Middleton often sticks with classic silhouettes.

But the Duchess of Cambridge mixed things up today, choosing a surprisingly edgy pair of boots for a visit to London’s Lavender Primary School today.

kate middleton, lk bennett, eponine, dress, green dress, black lace-up boots, celebrity style, Catherine Duchess of Cambridge at Lavender Primary SchoolCatherine Duchess of Cambridge visits schools in support of Children's Mental Health, London, UK - 05 Feb 2019Her Royal Highness will first visit Lavender Primary School in support of Place2Be's Children's Mental Health Week 2019. Place2Be, of which Her Royal Highness is Patron, is a leading UK children's mental health charity providing in-school support and expert training to improve the emotional wellbeing of pupils, families, teachers and school staff. The charity works directly with more than 282 primary and secondary schools across England, Scotland and Wales.The Duchess will then visit Alperton Community School to meet the UK’s first winner of the Varkey Foundation Global Teacher Prize, Andria Zafirakou, and find out more about the programmes theschool runs to support both students and teachers with their mental wellbeing. Ms Zafirakou won the global prize in 2018 in recognition of her contribution to the school community. — Kate Middleton steps out in a green Eponine dress with L.K. Bennett boots on Feb. 5.

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The 37-year-old sported a custom fluorescent-green dress by Eponine. The knee-length dress had front pockets and long sleeves.

For footwear, she selected a style from L.K. Bennett, a brand that has been on her radar for years. Rather than selecting classic pumps, the duchess picked L.K. Bennett’s Marissa ankle boots, a lace-up style with a 3.5-inch block heel. The shoes are crafted from ultra-soft suede and feature an eye-catching four-eyelet design.

kate middleton, lk bennett, celebrity style, boots, shoe detail, Catherine Duchess of Cambridge, shoe detail, visits Lavender Primary School in support of Place2Bes Childrens Mental Health Week 2019Catherine Duchess of Cambridge visits schools in support of Children's Mental Health, London, UK - 05 Feb 2019 — A closer look at Kate Middleton’s L.K. Bennett booties.

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They initially retailed for 295 pounds ($382) but have been marked down to 199.

Middleton accessorized with a black suede clutch by Mulberry and heart-shaped earrings by Kiki McDonough.

kate middleton, celebrity style, eponine green dress, lk bennett, boots, Catherine Duchess of Cambridge at Lavender Primary SchoolCatherine Duchess of Cambridge visits schools in support of Children's Mental Health, London, UK - 05 Feb 2019Her Royal Highness will first visit Lavender Primary School in support of Place2Be's Children's Mental Health Week 2019. Place2Be, of which Her Royal Highness is Patron, is a leading UK children's mental health charity providing in-school support and expert training to improve the emotional wellbeing of pupils, families, teachers and school staff. The charity works directly with more than 282 primary and secondary schools across England, Scotland and Wales.The Duchess will then visit Alperton Community School to meet the UK’s first winner of the Varkey Foundation Global Teacher Prize, Andria Zafirakou, and find out more about the programmes theschool runs to support both students and teachers with their mental wellbeing. Ms Zafirakou won the global prize in 2018 in recognition of her contribution to the school community. — Kate Middleton walks with a school administrator in London on Feb. 5.

CREDIT: Tim Rooke/Shutterstock

For her appearance today, the royal discussed mental health with schoolchildren and was asked to bring an item that makes her happy.

The University of St. Andrews alumnae pulled out a family photo — explaining that her children are what make her feel good.

“This is a photograph of my family. These are my children, and this is my husband. And my family makes me feel happy,” she explained to the children. “And we like playing outside together and spending lots of time together as a family, and that makes me feel very happy.”

The image Middleton selected will be familiar to fans: It was the same photo that appeared on the family’s 2018 Christmas card.