If you are going to a job interview forget about decolletage clothes, mini skirts and shorts, evening dresses. You have to choose a statement look even if outside is 40 degree.
Sweater or blouse and pants
A blazer and pencil skirt or pants
A button down and V-neck sweater
A black dress and tights
A wrap blouse and tweed skirt
And of course do not forget about makeup and hairstyle for the interview.