A simple sundress is more or less a wardrobe staple at this time of year, and we think this 'Evonne' dress from Forever 21 looks like a good buy for £22.80. It's suitably simple, but the bright red colour makes it stand out, and the flattering shape will make it easy to dress up with a pair of heels and some jewellery. Or you could just as easily dress it down with a pair of flat sandals and a cardi – up to you.