The Welsh songstress, 28, was pictured with striking locks after the 'multi-sensory' showcase for her latest EP FOUR.
Charlotte had, however, tied her tresses up into a low knot at the nape of her neck, meaning we weren't able to get a full look.
Grinning broadly, it appears that the mum-of-two's event - which was called 'Entanglement' and was held at Riverside London - was a success.
During the evening, Charlotte performed her tracks and even wowed the audience by singing under UV lights while wearing neon face paint.
FOUR has been inspired by science and, during the finale, she wore a glowing skirt attached to giant tentacles of flashing LED lights, which wrapped around the entire audience. Wow!
Sharing a cool picture on Twitter, Charlotte told fans: "Had an incredible time at my show 'Entanglement' last night. #FOUR."
Charlotte's EP is the latest in a series and she is holding another bash to celebrate in Cardiff on Friday night (7 March). Four is released on 10 March.
Her musician boyfriend, Jonathan Powell, performed in her band and the London Contemporary Voices choir also provided backing vocals.
Unlike her previous classical and then pop days, Charlotte's music is now of the folk genre.
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