Nurses and 3-Year-Old Girl With Cancer Brilliantly Sing ‘Let It Go’

Singing "Let It Go" may seem so 2013 (and '14, for that matter), but it's about to come back in the most heartwarming way.

A team of nurses at New Royal Hospital for Sick Children in Glasgow, Scotland performed the already classic song with a 3-year-old patient named Millie McColl who's battling cancer and shared it on the girl's Facebook page.

Millie is fighting stage 4 neuroblastoma, so the nurses took mic in hand and showed off their fierce dance moves in an attempt to cheer up Millie.

Around the 1:50 mark, Millie herself grabs the microphone to help sing. It's truly a moment that will get you misty-eyed.

You can donate to help Millie's family pay for treatment.