It sounds obvious, but the effortless addition of a pair of humongous earrings, colourful cat-eye shades, or punchy printed scarf has the power to transform your dress or jumpsuit - particularly if it errs on the simple side.
Case in point is Sienna Miller in this slinky navy Nili Lotan dress, which when worn with a silky Rockins scarf looks like a different dress altogether.
The addition of a statement bag - think XL gold hardwear, jazzy straps, and vibrant colours - will offer a similar effect. Bag-pies will be drawn to it and therefore won't even notice that your're sporting the same frock you wore to the work summer party last month.
Source : http://www.telegraph.co.uk/fashion/style/switch-occassionwear-wardrobe-rest-events-have-summer/