Fifth Harmony have promised their fans their new music as a four-piece will make them "so proud" of the group.

Fifth Harmony at the iHeartRadio Music Awards

Fifth Harmony at the iHeartRadio Music Awards

The girl band - who starred on the second series of 'The X Factor US' in July 2012 - recently lost member Camila Cabello, who quit the group last December to launch a solo pop career.

But the remaining members - Ally Brooke, Lauren Jauregui, Dinah Jane and Normani Kordei - were on hand at the 2017 iHeartRadio Music Awards at The Forum in Inglewood, California, on Sunday (05.03.17) to collect the Best Fan Army prize and made a vow to 'The Harmonizers' that their new songs as a four-piece will be great.

Dinah said: "You all have been working so hard and we have been working just as hard. We are sure to make you all so proud. You all stay tuned for new music."

Thanking the loyal Harmonizers, Ally added: "Thank you so much. Wow. This is truly amazing. Fans, you guys are truly a force to be reckoned with. We love you too. Thank you for bringing so much joy and kindness and love to our world. We wouldn't be the same without you. We thank God for you. This is for you, so thank you so much."

The award was presented by Taco Bell and Fifth Harmony fought off competition from Beyoncé's 'Beyhive', Demi Lovato's 'Lovatics', Justin Bieber's 'Beliebers' and Rihanna's 'Navy' to win the accolade.