Related Clues:

• School rule, maybe
• Fashion dos and don'ts?
• "No denim" may be part of one
• ''No shoes, no shirt, no service'' in a way
• "No jeans" may be part of one
• Various screeds do get written about ties, etc
• Scottish element in nameless German city maybe asks for tie
• Little number on morality pulls up Jean¿s white socks
• Casual Friday relaxes it
• Expected standard of attire
• The rules for gear selection?
• Stipulated attire
• The rule for making a sporting selection?
• Small firm in German city releasing new rules for outfit
• Set of rules which may mean men are 'tied'?