I dont know who started it but heres a few from 05/06/07.
http://www.youtube.com/watch?v=YTMEXGWRyf0
Chris honeywell was rockin tight style back in 05/06.
Heres a seg from hood in 05', he has the first part at 1:14.
Nick Mcnutt was really skinny then too in
http://vimeo.com/5452081 at 6:17
Whoever started it was probably a snowboarder in 2003/4 and a skater in 02. In skiing id say the trend started in 05-06.