When it comes to happy trends, it's rainbow stripes, sequins and bold yellow that make people smile the most. Rosie Huntington-Whiteley combined all three yesterday, and the result was pretty epic. It might sound over the top to call an outfit magical, however, Rosie's colourful striped sequin dress with balloon sleeves by Attico is one of the best things I've seen this month and had an "ahhh" moment when I found it on my Instagram feed. Rosie paired her jazzy dress with a pair of bold yellow strappy sandals by Attico and a pair of the brand's pink ankle straps. This week, I for one am going to try to be more Rosie and wear colour, colour and more colour. Keep scrolling to see and shop Rosie's rainbow dress.