Rihanna has reportedly cancelled a string of gigs in London. Sources had claimed that the pop superstar was due to headline the iconic Glastonbury Festival, which has since announced its line-up and is yet to include the Work singer. As well as the slot at Glastonbury, it had also been reported that Rihanna would be heading to London for a special residency, with six dates at the iconic London Stadium. At the time, The Telegraph reported that Rihanna had been planning to do six gigs in July at