A fixture of post-war pop culture, scion of showbiz royalty, star of stage, screen and tabloids, Liza Minnelli is a phenomenon – and still a barnstorming performer. At 66, she returns to London for one night only at the Royal Festival Hall as part of the Berlin in the '20s and '30s strand of The Rest Is Noise, so expect a particular focus on material from 'Cabaret'.