I shall start with one of my favourite labels, United Bamboo.
Their collection has a light, young feel to it, although you can still see last season's trends like grey, nautical and the pinafore. The collection is also a mix of everything chic, as there were vintage wear as well.
This preppy look is cute, but it's not in-your-face cute. I like the pretty bow, and schoolgirl pinafore.
Pattern clashing is a hard look to pull but this is one way of working it. Plaid and polka dots mismatch but in a similar material.