Those trendy people are doing some cool things with jewellery these days. Wearing multiple stacked rings and phalanx rings is one of them.
Phalanx bones (phalanges) form the skeleton of the fingers. Rings are most commonly worn on the Proximal phalanges but these days the cool kids are wearing them on their Intermediate and Distal phalanges as well.
Whether you combine several dainty rings or wear edgier stacked rings such as Repossi’s ‘Berbere’ (pictured), more is certainly better when accessorising your hand.