Katy Perry review – desperate pop pantomime boosted by bangers

O2 Arena, London
Giant flamingos and comedy skits baffle in a show that works best when the energetic star sticks to the hitsKaty Perry finds herself in a tricky position vis-a-vis her day job. One of the most successful pop stars of the decade with nine US chart-toppers and 13 UK Top 10 singles to date, she’s used to letting her gold-plated hits act like placeholders while an identity is constructed behind them. However, last year’s muddled, banger-free Witness album brought the fac