Sophie Ellis-Bextor: ‘I thought I might become a laughing stock’

“I’ve always been much sillier than people thought I was,” says Sophie Ellis-Bextor from the stage of the Hammersmith Apollo, midway through her Christmas Kitchen Disco Tour. It’s a tinseltastic live show which sees the 44-year-old pop star belting out a glorious mix of festive and disco classics from astride a white plastic horse, telling cracker jokes with a martini in her hand and wearing such a glittering array of costumes she becomes a human bauble.