“People may say 'What’s the point in bringing My Fair Lady back?',” observed Stephen K. Amos at a recent My Fair Lady press event. And it’s a worthwhile question to ask. With plenty of potential West End musicals fighting for the few available theatres, should older shows make way for newer stories on stage? But this My Fair Lady isn’t dated. Instead, My Fair Lady in London rips up the textbook and revises the narrative for a 21st-century audience. Bartlett Sher’s revival earned 10 Tony Award...