T.Shirt: Style Stalker. 
Shorts: Vintage. Trainers/Sneakers: Nike (similar here).
Baseball Cap: Hervè Legèr (get the look here).

I used to be obsessed with trainers (sneakers to the Americans). I eventually outgrew my obsession but when I see a pair of Nike air max with leopard accents I have to pounce!

More baseball caps I love herehere.