C-25.01, r. 9 - Regulation of the Court of Québec

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22. Dress code. Every person present in the courtroom must be suitably dressed.
Except in civil practice, judges wear a black robe either closed in front or with a black jacket, a white shirt, collar and bands, dark clothing and appropriate footwear at all times in the courtroom.
Except in civil practice, lawyers wear a black robe closed in front with a black jacket, a white shirt, collar and bands, dark clothing and appropriate footwear at all times in the courtroom.
Male lawyers and notaries, in cases where the wearing of a robe is not required, wear trousers, a jacket, shirt and tie in plain taste and appropriate footwear, and female lawyers and notaries wear a skirt or trousers with a blouse and jacket or a plain dress with appropriate footwear.
The same rules apply to articling students, minus the bands.
At all times, clerks, court bailiffs and other officers of the court wear a black robe with plain clothing of a dark hue. Appropriate closed footwear must be worn.
O.C. 1099-2015, s. 22.