Olly Murs posted the pic on Instagram, with himself and Demi sandwiched between Nialler and Sam, both giving the thumbs up signal. Their grins prove it must have been a fun time getting all of them in there – and we love how Demi's just a little too short, looking like the sweater might swallow her up at any moment!
Olly captioned the pic: "Check out this tasty #festive4way @samsmithworld @ddlovato @NiallOfficial"
Last week, Demi and Sam shared some love on Twitter, with Sam sharing a pic and writing: "So good to finally meet you @ddlovato !! Been a fan since forever xx" and Demi gushing: "This guy is unbelievably sweet and incredibly talented... So good to see you @samsmithworld"
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Gallery | Best Holiday Manis