The Spice Girls have staged the biggest comeback in 90s pop history after launching their Spiceworld reunion tour in Dublin on Friday.
Opening and closing the concert at Croke Park with Spice Up Your Life, the girls filled their set with many of their greatest hits.
Fans in attendance were posting to social media, describing the night as "emotional" and "iconic", while others around the world tried to get a piece of the action by watching through livestreams.
One fan on Instagram posted after the concert, saying it had been the "best night of my life".
However, mid-concert there appeared to be a couple of issues with the sound as several concertgoers complained that they couldn't hear the music or the lyrics.
Advertisement
One fan tweeted: "Loving the show but sound isn't great up in Hogan stand… Could you double check it???"
But this minor blip did not appear to dampen the overall mood.
More from Spice Girls
Emma Bunton, Geri Horner, Melanie Brown and Melanie Chisholm – aka Baby, Ginger, Scary and Sporty – announced their reunion in November last year.
This is the first time the girls have reunited in seven years after their performance at the closing ceremony for the 2012 London Olympics.
However, fifth and final member Victoria Beckham – aka Posh – will not be joining the tour this time around, but she sent a message of encouragement to her former bandmates earlier today.
Mega fans were spotted recreating the iconic outfits of their pop idols, including Geri Horner's notorious union jack dress, Emma Bunton's blonde pigtails, and Mel B's leopard prints.
Both Mel B and Geri Horner satisfied fans on Friday, making sure to also resurrect their trademark costumes.