She recently swapped her signature platinum locks for a new brunette 'do.
And Sarah Harding seems to be fully embracing her darker side as she poses in a smouldering new photoshoot.
Embodying the 'femme fatale', the Girls Aloud star channeled gothic in an all-black outfit to promote a new mobile phone.
Her black power suit, lipstick and nails all perfectly complimented her new mane.
Sarah first showcased her new hair colour at London Fashion Week in February.
Photo: © HTC