Possible Clues:

• Member joining top celebrities: one sticking to the law
• Stickler for the law gets all flustered about one
• One following statutes to the letter
• One adhering to the detail of the law
• Advocate of the letter of the law
• Stickler getting on with the most celebrated people
• Member of the elite class strictly adhering to regulations
• Strict lawyer on a roll
• Member with a rota is one to go by the book
• Strict judge giving supporter a catalogue