“With nostalgic details from the Nineties and Noughties dominating everywhere from the catwalk to Coachella it was not long before belly chains were on our radar,” says Laura Costello, senior buying manager at London jewellery label Astrid & Miyu, which just debuted three stomach-centric styles as part of its new summer collection: one made from coloured beads, one a chunky gold chain with a dangling freshwater pearl and the third a simple twisted gold chain that can, says Costello, “even be worn underneath apparel with cut-out detailing for a just a hint of sparkle”.