"Shout Out To My Ex" hitmakers Little Mix have been added to the line-up for this year's Capital FM Jingle Bell Ball. 

The event is scheduled to take place on December 3 and December 4 at London's O2 Arena and Little Mix, who will unveil their fourth studio album Glory Days on November 18, are set to join the likes of Shawn Mendes, Nathan Sykes and The Vamps on the bill. 

Other confirmed artists include "This Is What We Came For" hitmaker Calvin Harris, singer-songwriter James Arthur and Olly Murs. Tickets for the extravaganza will go on sale tomorrow from 8am over at Capital FM's website. 

The acts performing on Saturday include:

• Calvin Harris
• Clean Bandit 
• Craig David
• Dua Lipa
• Sigala
• Nathan Sykes
• Louisa Johnson 
• Olly Murs 
• Little Mix

The Sunday line-up is as follows:

• Shawn Mendes
• DNCE
• Louisa Johnson 
• The Vamps
• Jonas Blue
• Years & Years 
• James Arthur
• Martin Garrix

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Watch a selection of videos from the acts on the bill here: