Okay, so we may not be a Victoria's Secret model like Alessandra Ambrosio, or sunning ourselves in Hawaii right now. BUT! We can recreate her colourful summer nails. Rainbow nails are perfectly fun and frivolous for summer, and compared to rainbow hair it's a pretty low-maintenance trend. Alessandra opted for pastels on one hand and brights on the other, but you can go for any colour-way you wish.