With a straight set win over Novak Djokovic the Wimbledon grand final should have been Spaniard and Louis Vuitton ambassador Carlos Alvarez ’s shining moment but never underestimate the power of a purple dress. Making her second public appearance since revealing her cancer diagnosis in March, Catherine, Princess of Wales dominated centre court. The prestigious tennis tournament had already featured a line-up of royals attempting to fill the Catherine-sized void created by the princess’s absence from official duties since January, apart from a My Fair Lady moment at Trooping the Colour last month.

With one dress Catherine showed how to serve the grandest of style slams. Princess Catherine was greeted by a standing ovation from the centre court crowd as she took her seat in the royal box. Credit: AP Having flirted with summery blazer and skirt combinations and playful prints at past tournaments , Catherine played a power move in regal purple for her return to the public eye.

The customised version of Daniela Karnuts ‘Cecilia’ dress from her London-based label Safiyaa made the right royal impact. The A-line midi-dress with twist at the bodice is currently available (until the Kate-effect kicks in) for £1079 ($2067) with a modest V-neck, which Catherine had altered to a boat neck. Purple and green are the Wimbledon club colours, with Catherine wearing three green outfits, an emerald dress by Roland Mouret, a mint Balmain blazer with a white pleated skirt and a vivid gree.