So what is the dividing line between boho and sporty or sporty and preppy? In my mind sporty and preppy are very close to the same thing, but then preppy is a word that is very much an American concept.
I was going to suggest Fred Perry as a sporty style as well. Gap I think as beening sporty and Tommy Hilfinger. Also Gant and Lacoste.
Is a sporty style a stripped down version of other styles - especially boho and classic? Classic is what I think of when I picture Jennifer Aniston and Kathrine Hepburn.
In my mind I would have chinos, a breton stripe top and perhaps a blazer. Well fitted, no fuss, all natural materials. I think that it is a look that you actually need to be very fit to wear well - which is why Jen Aniston looks so good in it - wish I had her arms!