SHE famously sang "light up, light up" - but Leona Lewis will be switching them all OFF for next month's Earth Hour.
The superstar singer is making her home a no-glow zone from 8.30pm on March 27.
And we are urging every single one of our readers to do the same, as part of our Go Green & Save campaign.
It is our way of supporting WWF's Earth Hour - which aims to get a billion people across the world to turn off their lights for 0 minutes to remind politicians just how important climate change is.
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