Ahead of the concert on Thursday night, Bunton shared a photograph of herself cosying up to the super fan Oscar winner in the empty stadium just hours before she took to the stage with her fellow Spice Girls — Geri Halliwell, Melanie “Mel B” Brown and Melanie “Mel C” Chisholm.
“When Emma met Emma,” the 43-year-old wrote in the caption of the photo with the hashtag “#2become1” in reference to the pop group’s 1996 hit of the same name.
In the photograph, Bunton can be seen sporting bubblegum-pink-coloured hair while the US actor is wearing a pair of white skinny jeans and a 1990s-inspired denim jack with a red love heart stitched into the left breast pocket.
During the concert, the Spice Girls’ band even paid tribute to Stone with a musical rendition of the theme song, La La Land, from the actor’s Oscar-winning 2016 film of the same name.
Bunton teased the pair’s meeting ahead of the concert on Heart Breakfast earlier in the day.
“Do you know who we’ve got coming – Oh I hope I’m allowed to say this but Emma Stone is coming tonight and I’ve never met Emma Stone and we’re going to be meeting her so I’m really excited,” she revealed to presenters Amanda Holden and Jamie Theakston.
The singer continued, adding that she had heard Stone dropped her birth name Emily to be called Emma “because she was such a Spice Girls fan” as a child.
“It’s amazing,” Bunton added.
Stone has spoken about her love of the Spice Girls on several occasions over the years.
Stone said: “Was it because of Emma Lee Bunton from the Spice Girls? Yes, it was.”
Stone wasn’t the only celebrity in attendance at the concert last night.
US band Haim were also spotted at the show, with Alana Haim later sharing a photograph of her meeting Bunton.
“I bend the knee to the original baby,” she captioned a photograph of the pair on Instagram.
Singer Sam Smith also shared a photograph of himself before the concert wearing a bright blue and green parka jacket and white Spice Girls’ T-shirt.
“Spice Boy,” he captioned the photograph.
Radio 1 DJ Greg James and Olympic athlete Greg Rutherford were also among the fans in the crowd.
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