The style clinic

    Prince William and Catherine, Duchess of Cambridge
    We've seen it all before: Prince William and Catherine Duchess of Cambridge on their tour of Ottawa Photograph: Tim Rooke/Rex Features

    Of course it is, but my question is why buy one dress when, for the same money, you could invest in separates? Buy a statement skirt (Just In Case at Fenwicks do stunning print skirts which start from £159) and then change your top for each occasion. JO JONES, FASHION EDITOR

    It depends on the guest list. If there's minimal crossover, then I wouldn't hesitate. Otherwise, buy a sale bargain and revive some old favourite frocks from your wardrobe. If rewearing works for the Duchess of Cambridge, then it can work for you. HELEN SEAMONS, DEPUTY FASHION EDITOR

    Why buy a dress you love and only wear it once? Accessories are the perfect way to make one dress work three ways – pair it with long delicate jewels, a topknot and evening jacket, or with a denim jacket, flats and bold bangles. It's beneficial to our environment to recycle and reuse. Versatile dresses can carry you, day to night, from one week to the next! TABITHA SOMERSET-WEBB, PROJECT D

    • Twitter tip: If you look knockout, then who cares? That's what an investment piece is for! @REBECCAPEARSON