Kate Middleton brought her sartorial style in a British designer dress at the XLP youth mentoring project in Barbican, London Friday. She looked chic in a red skirt suit by a local brand. As soon as the princess was spotted in the outfit, the website of the brand crashed due to high volume traffic — “the Kate effect.”

Kate wore a red and white chequered tweed custom-made skirt suit for her latest royal engagement with husband Prince William. Her outfit is by lesser known British label Epinone. The Kensington-based brand was established by former personal stylist Jet Shenkman and specializes in bespoke pieces inspired by the 1950s and 1960s.

The outfit gave a very retro vibe and is from Epinone’s Spring/Summer 2016 collection (Look 1113). The top featured a high neck, three-fourth length sleeves. The outfit also had chunky black button detailing on the top as well as the skirt.

The above-the-knee skirt was flared and had box pleats. It flattered Kate’s figure and also showed off her toned legs. Kate added some color to the event in the in her spring look ensemble.

Kate added height to her frame in a pair of black suede high heels and carried a matching clutch bag. She accessorized with Kiki McDonough morganite and diamond cushion drop earrings and her engagement ring. Her make-up as usual was flawless with a hint of lipstick and smoky eyes.

The mother-of-two’s brunette tresses were left loose in a side part. Meanwhile, soon after the Duchess of Cambridge was spotted in the red and white skirt-suit, Epinone’s website crashed due to the “Kate effect” with high volume traffic. Epinone is known as a “bespoke womenswear brand.”

“Every garment is designed and made in London for women who seek out individuality and who desire to be both chic and contemporary,” according to the website. At the time of writing, the brand has 104 followers on Twitter, which was only 17 earlier as per Hello.

Kate and William listened to personal stories about life growing up among gangs, violence and poverty at London Wall during their visit to the urban youth charity XLP. They learnt about the work carried out by their mentoring scheme XL Mentoring.