The last night of Lily Allen’s UK tour was presented with a generous if slightly surprising helping of Nativity-themed add-ons. Allen was wheeled on stage (in darkness) in an elaborate manger. As a giant star lit up above, she slid out from her bed of straw, while singing the opening number Sheezus. Her band were dressed as the three wise men— although there were four of them. The bizarre giant baby bottles that have decorated her set for several months were augmented by seasonal extras, including a clump of mistletoe that descended during Close Your Eyes — a typically frank hymn to the delights of postnatal sex. There was even a choir of children — welcomed with raucous enthusiasm by the audience — who