Diet Coke is giving away a set of brand new colours created by nails inc and consumers can pick up one for free by purchasing two 500ml bottles of diet Coke in selected Boots stores nationwide between 5 May and 30 June, 2010.

The collection is inspired by the four fashion capitals of the world - New York, London, Milan and Paris with one nail polish worth £10.50 RRP. 'London' is a nude colour, 'Paris' is a deep purple, 'Milan' is red and 'New York' is fuchsia pink.