From redefining pop to silver screen superstar: Lady Gaga is a star reborn

From redefining pop a decade ago to stealing the spotlight at film festivals this year, Lady Gaga, with her show-stopping role in A Star Is Born, is a force of nature, writes Rachel Syme.

Lady Gaga did not so much arrive at the Venice Film Festival in August as she floated into it, a platinum Aphrodite borne on the waves, black stilettos skimming the sea foam. Which is to say, she took a water taxi.