Fifth Harmony have debuted their latest music video.

The girl group today (September 19) unveiled the promo clip for 'That's My Girl'.

The video enjoys a cinematic feel, with the singers performing in an almost post-apocalyptic world.

They are seen helping out people who have become injured.

'That's My Girl' features on Fifth Harmony's second album '7/27', which was released earlier this year.

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Watch the 'That's My Girl' video below: