Rule 501
Clothing
1. At ISU Championships and International Competitions, including the Olympic Winter Games and the Winter Youth Olympic Games, the clothing of the Competitors must be modest, dignified and appropriate for athletic competition – not garish or theatrical in design. Clothing may, however, reflect the character of the music chosen. The clothing must not give the effect of excessive nudity inappropriate for the discipline. Men must wear full length trousers. Accessories and props are not permitted. [Emphasis mine]
Clothing that does not adhere to these guidelines will be penalized by a deduction (see Rule 353, paragraph 1.n).
For Ice Dance, exceptions to the restrictions may be announced by the IDTC.
2. The decorations on costumes must be non-detachable. Part of the costume or decoration falling on the ice will be penalized by a deduction (see Rule 353, paragraph 1.n).