One of the current menswear brands that usually grabs my attention due to it's detailed prints and 70s retro vibe is Etro. Considered by some loud and bold; and by other funky and stylish, I consider it stylish and retro. Below is an ensemble that made me an Etro "fan" and if I'm not mistaken is from their SS08 collection.
Ideal to be worn at the beach, the pool, to stroll around on holiday or attend a summer garden party. The shirt has a paisley print, the belt is woven (probably a Native American craft), the shades are aviators (classic and back in style), the shoes appear to be mocassins (although they can be replaced by sandals or boat shoes). I'll probably remove the hand bag, but it's up to you.