Chambray is in total fad mode so eeeeeverybody has it. Slim is in total fad mode so eeeeeeeeverybody has it. Depends on how much you want to spend and how many barely noticable extras the shirt has:
(in order of class)
Old Navy or Rue 21
Banana Republic or J. Crew
eeehhh Macys or something
Self Edge, Blue Owl, Blue in Green, etc
ehhhhh Saks Fifth or something
*You can go to any website and type in "Chambray" for results. Filter for "Men" if that's what you're in to.