Possible Clues:

• 'Twelfth Night' heroine
• 'Twelfth Night' countess
• Singer Newton-John
• "Twelfth Night" heroine
• ''Twelfth Night'' character
• Ms. Newton-John
• John's 'Grease' co-star
• "Booksmart" director Wilde
• 'Booksmart' director Wilde
• "Physical" singer Newton-John