I chanced upon this website that belongs to designer Miura Daichi (not the singer) & seems that on his website , he stated that he designed some of the following Ayu's outfits namely :
- DREAM ON
- FIVE
- beloved PV
- Why ... PV
- S CUP CM
- ayumi hamasaki COUNTDOWN LIVE 2010-2011 ~do it again~
- ayumi hamasaki ARENA TOUR 2012 A ~HOTEL Love songs~
- ayumi hamasaki 15th Anniversary TOUR ~A BEST LIVE~
http://www.daichimiura.com/design/
The only one I never seen before was for the S CUP CM oO