Fifth Harmony have uploaded a short video to ask fans to vote for them at this year's MTV VMAs.

The girl group are up for the Artist to Watch prize at the ceremony, which will be held on Sunday (August 24).

It is publicly voted and the US stars took to Instagram to post a clip to rouse their troops ahead of the big day.

Fifth Harmony are facing up against Sam Smith, 5 Seconds of Summer, Charli XCX and Schoolboy Q in the category.

When the nominations meanwhile were announced, singer Ally Brooke Hernandez tweeted:

"I am in tears at 7 in the morning. We are nominated for a VMA!!! Thank you @MTV, I can't describe my overwhelming happiness. What in the world??? Genuinely am in shock and disbelief. Y'all are the best fans in the entire world. I love you all more than I can say. VMAs are like the highlight of my life. How can I process this??? BRB crying."

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Watch Fifth Harmony's short video below: