Appropriate attire for Le Pigeon?
How dressed up do we need to be? We have reservations on Sunday night and will be traveling that day. Coat and tie? Dress or slacks?
Portland is very casual. There are few places where this question might apply but Le Pigeon is not one of them. Go with what ever feels comfortable. The mere fact you are questioning leads me to believe that you will be fine even in your most casual wear.
Casual. This is Portland, after all. To give you an idea, last time I was at Le Pigeon sitting at the counter, the Beastie Boys were playing on the stereo.