Willow Smith has treated her fans on Facebook to an exclusive preview of what will be her second single, '21st Century Girl'.

She posted the short video to her official Facebook page in the early hours of this morning (January 24) and the track has a very different sound to her debut single, 'Whip My Hair'. The 10-year old singing sensation has gone for a more dance orientated approach with '21st Century Girl' and although the preview is only around 17 seconds long, it sounds great. 

Willow will be touring the UK alongside Justin Bieber in March and you can check out the song's clip here: