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.
Yesterday I was joined on stage by my childhood idol @melaniecmusic to sing 'Say You'll Be There' with me. I literally became 8 year old Karen right there on stage and it was so emotional, so surreal and so uplifting!! Thank u so so much Melanie for making a dream come true for this girl and for making the crowd blow off the roof of Roundhouse!! ðŸ'•âÂ?¤ï¸Â?ðŸ'• A HUGE thanks to everyone who was there - u were SUCH an amazing and loving crowd!!! I was truly overwhelmed and felt so empowered by all the good vibes in that room! Also a massive thanks to @liss.music and @nimmonimmo for supporting - felt so lucky to have u guys with me on this special night!!! âœ¨âœ¨âœ¨ðŸ˜‚âœ¨âœ¨âœ¨RG of @_burakcingi_
Tonight I had the honour of sharing a stage @roundhouseldn with this incredible woman @momomoyouth she slayed #songs #vocals #energy #attitude She was inspired by the Spice Girls as a kid now she inspires me #proud #girlpower âÂ?¤ï¸Â?âÂ?¤ï¸Â?âÂ?¤ï¸Â?âÂ?¤ï¸Â?âÂ?¤ï¸Â?