It will no doubt go down in history as one of the most important global gatherings to ever take place, and celebrities who care about the future of the planet have been attending the conference since it began on 31 October in Glasgow, Scotland.
One such celebrity was Ellie Goulding who took to social media and posted a caption alongside a picture of herself holding her baby, the caption said, "Our future generations shouldn't have to inherit a broken planet because we didn't take the opportunity to fix it when we could! Let's go".
Goulding spent a day in Glasgow with friend and fellow activist Princess Eugenie while the fate of planet earth continued to be debated by world leaders trying to compromise and pledge their commitment to limiting a global temperature rise to 1.5°C - anything above this would be catastrophic.
Transitioning away from coal has been seen as a key move to achieving this 2050 net-zero goal.
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Other celebs spotted at the conference included Leoroandi Di Caprio, Idris Alba, Emma Watson, Barak Obama, Lily Cole, and Stella McCartney.
Di Caprio met with John Kerry, US Special Presidential Envoy for Climate, to discuss the newly launched Global Methane Pledge while Matt Damon did not visit Glasgow in person, but took part virtually from New York in a panel discussion about water supply in developing countries.
The 51-year-old is the co-founder of Water.org, a charity that brings water and sanitation to communities in need.
COP26 is due to wrap on 12 November. The summit officially kicked off on Sunday 31 October with the opening address given by Prince Charles.
