© @Copyright HELLO! Hello! Magazine 's fans are convinced she's engaged after the singer showed off an incredible diamond ring during her holiday in Capri, Italy.The Smile hit-maker – who has kept tight-lipped about engagement rumours since last year – is thought to be betrothed to actor David Harbour, but the pair have remained coy about their transatlantic romance.After Lily shared a bikini selfie from the beach, her fans rushed to congratulate her after spotting the huge rock on her ring