I found this picture of Jon Bon Jovi on wikipedia.
He seems to be wearing a Neil Pryde t-shirt. Not the typical brand a famous rocker would wear.
Is he a windsurfer? Did he get it at the local op-shop?
He does share the same birthday as Laird Hamilton.
Bicycles more likely?
the store had sold out because every newzealander living on the gold coast had bought one to put on their commodore rear window, so jon bought the next best thing