Formal and clean to represent your self end make employer's trust you and believe in you
Dress the best your pocket can afford, just make sure it is clean.
Safe shoes an safe vast uniform
It depends to the work you apply for. if it office work then you should wear suits
Full uniform of overall n safety vest
Formal maybe black and white long slive shirt and black trouser or if you're a woman and you don't use trouser you can use your skirt
A clean working suits