Kate Middleton’s sapphire blue Issa dress worn for her engagement announcement in 2010 is a silk wrap design by Brazilian designer Daniella Helayel.

The dress was reproduced in the same shade and went on to sell out again and again on net-a-porter and in Harvey Nichols, as “copy-Kates” rushed out to emulate their style icon.

Now, a more purse-friendly version has been unveiled as the star piece in the brand’s new capsule collection for Banana Republic, which goes on sale next month.

The jersey dress is a tad shorter than the original sell-out version but still features a wrap waist and ruched detailing. It’s available in both navy and plum and another similar style features short sleeves and a deep V-neck.

When Kate Middleton wore the sapphire blue Issa dress for her engagement announcement in 2010, she sparked one of the first of many Kate fashion frenzies

The collaboration was first announced back in April 2013, almost two years after Camilla Al Fayed bought a majority stake in the company and one month before founder and designer Daniella Helayel left the brand following rumors that both sides were unhappy.

The 40 piece collection promises that Kate Middleton’s style “will soon be within reach” thanks to a limited edition range that includes plenty of Duchess inspired wrap dresses as well as light knits, tops and accessories.

Speaking about the project earlier this year Simon Kneen, Banana Republic’s creative director and executive vice president of design, told WWD: “We always love animal prints such as zebra and giraffe stripes.

“Issa took that and modernized it. I love that the collection is our world and their world.”

Brazilian designer Daniella Helayel left the company after nine years, saying in May: “The time has come for me to move on to focus on my art, travel and other interests.”

“Creating Issa has been one of the most rewarding things in my life. I may be leaving, but the Issa girl will live forever in my heart.”

Camilla Al Fayed, daughter of ex-Harrods owner Mohammed Al Fayed, remains the majority shareholder as she oversees the company’s global expansion.

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