Jacket + Trousers: Zara. Similars to trousers: Petal Wideleg + Velvet wideleg from Free People or Gianni Versace (on sale). Hat: H&M. Silver winkle pickers: Underground Originals. Try Calla, Kurt Geiger or Social pointed brogues. Bag: Thrifted. Similar from Rebecca Minkoff. Broach: Vintage
Did the classic 'I forgot about these' thing when I found them in the wardrobe - typical.