That early '60s Mad Men-style look doesn't have to cost a fortune, you can get something inspired by the era from your local supermarket. At
Pleat Tunic Shirt by t.b.a. - Retro to Go
60s Yellow Dress
George Yellow Dresses for Women for sale
1960s Dress Styles Swing, Shift, Mod, Mini Dresses
Adorable 1960s Vintage Yellow Shift Dress - Sweden
1960s-style yellow shift dress by George at Asda - Retro to Go
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Yellow Daisy Print Wrap Front Mini Dress, Women
A Coin For the Well - Style Inspiration for Everyday Vintage Looks: Scoring Authentic Vintage at Hallowe'en = Priceless