Kate Middleton sparked a fashion frenzy when she wore a blue Issa wrap dress to announce her engagement to Prince William in 2010.

The silk wrap design by Brazil's Daniella Helayel went on to sell out online and in stores as Copy Kates across the globe sought to emulate the look.

And now just weeks after it was revealed that the royal couple are expecting their first child, a maternity fashion website has reinvented the dress for pregnant women.

Pregnant fans of Kate can buy the dress from Blossom Mother & Child, which is offering the maternity version of the Duchess of Cambridge's outfit for £522.

The specially tailored silk dress, which features a plunging V-neck and soft wrap ties, is almost identical on the original Issa dress, with the exception of its larger cut which allows for a growing bump.

The website claims the dress is "part of Issa's DNA [and] delivers without fail every time".

"This season Issa revisit the iconic style in a chic, flattering and rich indigo shade," it reads.