Pink Bouclé Outfit with Lace Inserts and Silk Peony Trim

The Queen debuted this pale dusty pink outfit for the renaming of the Marché aux Fleurs in Paris in her honour as Marché aux Fleurs - Reine Elisabeth II, on 7 June 2014, the last day of her State visit to France to commemorate the 70th anniversary of the D-Day landings (Daily Mail article here). The outfit is comprised of a dress and collarless jacket in a pale dusty pink, gold-speckled bouclé fabric with white lace bands inserted across the waist and cuffs.
The hat is an Angela Kelly creation, in white straw trimmed with a large band of the same bouclé fabric and a pink silk peony on one side. For the occasion, the Queen finished off her look with the appropriately floral Irish Blossom diamond brooch:

With French President François Hollande and Mayor of Paris Anne Hidalgo.

On 5 March 2015, the Queen recycled the suit to bid farewell to the President of the United Mexican States, Señor Enrique Peña Nieto, and Señora Angélica Rivera de Peña at the end of their State Visit to the United Kingdom. The Cullinan VI & VII brooches were worn:

The whole look was repeated on 15 August 2015, to attend a service at St Martin-in-the-Fields Church in London to commemorate the 70th anniversary of the end of hostilities with Japan in WWII, or VJ70 (Daily Mail article here). This time the Queen accessorized with the Cullinan V brooch:

On 4 May 2016, the Queen wore the dress on its own, again with the Cullinan V brooch, to receive Baroness Scotland at Buckingham Palace, on her appointment as Commonwealth Secretary General. Note that the dress features the same lace inlays at the cuffs and waist as the jacket:

On 5 April 2017, the Queen wore the dress and jacket to a ceremony at Windsor Castle during which she presented the Royal Lancers with a Guidon, or heraldic banner. Predictably, the Royal Lancers badge was worn as a brooch. After the presentation the Queen, the Regiment's Colonel-in-Chief, granted The Royal Lancers with the honorific suffix 'Queen Elizabeths Own' in recognition of their service to Her Majesty and to Queen Elizabeth the Queen Mother (Daily Mail article here):