It looks like Christmas has arrived early for girl group TWICE as they are getting ready to release their repackaged version of their first studio album 'Twicetagram' on December 11. Titled 'Merry & Happy,' the album will have two fresh numbers alongside the original track list.

The new additions are 'Heart Shaker' and the eponymous 'Merry & Happy' penned by Park Jin-young. The girls have just released a sneak-peak of the making of 'Heart Shaker' and its truly looks vow.

Have a look:

On December 7, TWICE's agency JYP Entertainment released behind-the-scenes making video of the MV

They also released the complete lyrics of 'Heart Shaker.'

And of course, how can we miss those vibrant individual photo parade