Butterfly Trimmed Straw Hat, White Jacket and Silk Rose Print Dress

This is a look that sees Her Majesty stray into slightly more flamboyant millinery territory: it's unusual, in fact, to see the Queen's hats adorned in anything more risqué than feathered flowers, but this hats departs from tradition with its highly distinctive feathered butterfiles décor. As for what concerns the clothes, we have a white cotton collarless jacket and a white silk dress with a white-on-white polka dot motif, printed in blue naturalistic roses and green butterflies, a nod to the hat that ties together the whole look.

The dress that forms part of this outfit is probably one of the most widely used on its own among those in Her Majesty's wardrobe. She selected it for a reception at Hotel Phoenicia in Floriana, Malta, on 24 November 2005, during a visit she undertook with the Duke of Edinburgh to coincide with their 58th wedding anniversary. The Queen wore a pair of twin brooches in the shape of ivy leaves, part of the Greville bequest:

The Queen wore the complete outfit on 18 March 2006, on a State visit to Singapore during which she presented the winner's cup at the Queen Elizabeth II Cup held at the Singapore Turf Club. The diamond and sapphire grapes brooch was worn:

 

The look, minus the jacket, was repeated on 12 June 2006 at a Buckingham Palace garden party to mark to mark the 350th anniversary of the Grenadier Guards. The Queen predictably wore the Grenadier Guards badge:

 

 

 

While the hat and jacket have not been seen in public in quite some time, the Queen seems to have got much wear out of the dress, which, to this day, she frequently chooses for daytime engagements and audiences.

On 19 July 2006, the Queen wore the dress, accessorized with Marie Feodorovna's sapphire and pearl pendant brooch, to attend the BBC Proms at the Royal Albert Hall. She is seen below with Welsh baritone Bryn Terfel, whom she presented with The Queen's Medal for Music:

The Queen wore the dress again on 11 July 2013 to the Coronation Festival, a one-off event held in the gardens of Buckingham Palace, where the Royal Warrant Holders Association brought together - for the first time on this scale - over 200 companies who hold Royal Warrants of Appointment. She wore the Nizam of Hyderabad Rose brooch:

 

Very unusually, the Queen graciously agreed to pose for a photograph with Jessica Fitch, aged 7, and Bertie the teddy bear (Daily Mail story here):

On 1 July 2014, the Queen repeated the dress for an audience with Scotland's First Minister Alex Salmond at the Palace of Holyroodhouse in Edinburgh (Daily Mail article here). Not so easy to spot, but HM seems to be wearing the Flame Lily brooch: