Girl group Little Mix are overwhelmed by the response to their book, 'Our World'. 

They released the book, which details their evolution and career so far, back in October and shared a video message with fans today thanking them for being so receptive and supportive. Songstress Perrie Edwards said: "Our book 'Little Mix: Our World' is out now and we hope you're all loving it. We've seen such amazing comments from you guys, so thank you so much."

Member Jesy Nelson recently told Maximum Pop that writing the book was cathartic: "It’s weird when you have to relive certain things. It can be really emotional to go back to a time which wasn’t very nice for you. It was hard for all of us but at the same time it was like therapy."

Little Mix, meanwhile, will perform at the Capital FM Jingle Bell Ball on Saturday, December 3 at London's O2 Arena. Tickets for the event have already sold out. 

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Watch behind-the-scenes footage from their "Shout Out To My Ex" music video below: