Possible Clues:

• Legal action to determine father
• A potentially costly case of pop?
• Legal case that shows one's young?
• A who's-the-daddy action
• A case of identity with financial implications?
• Head injured in try at match, causing legal proceedings
• Establishes someone's father could go off the rails in tailors? That's childproof!
• Such an action may make Ian pretty upset with outfit
• The pop establishment in action
• Attorney's attire