Yes = ) No sports jerseys, no flip flops and sandals(Saves people with dirty feet on board), no shorts for men and no bare shoulders for woman or excessively short skirts!
Oh, and no smelling bad please, I have had it with smelly people who wear expensive clothes but cannot practice basic hygene! go to the airport bathroom beforehand if you didnt want to/couldnt shower!
Will make for a better environment for all on board