The Prime Minister asked schoolchildren in Liberia what they wanted to be when they grow up. They said doctors and lawyers, to which David Cameron joked that children in the UK want to be popstars.
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The singer ended speculation over who would perform by saying "the rumors are true" to her 63 million Twitter followers on Friday morning.
There will be lighter winds for all of us than yesterday, although it will still feel cool.
Senior fashion analyst at Mintel Tamara Sender said: "For the first time ever sales of trainers have overtaken high heels."