The crowd, understandably, went nuts because it's not every day you get a bona fide Spice Girl on stage singing one of their hits.
MØ finished her UK tour with a bang on Saturday night after getting Mel C out on stage during her encore performance of 'Say You'll Be There' in London's Roundhouse.
The Scandinavian singer and the former Spice Girl both took to Instagram after the event to sing each others praises as the rest of their joint fandoms freaked out over the performance, which you can watch below.
Via NME