Everybody knows the Christmas classic ‘Rockin’ Around The Christmas Tree’, which is a strong contender for one of the best Christmas songs of all time.

The 1958 festive hit, sung by Brenda Lee, has just made history by reaching number one on the Billboard 100 chart for the first time – that’s 65 years after its first release.

Brenda Lee has also just re-released the track and people online have made a wild discovery that has blown our minds.

The song was released back in 1958 and Brenda Lee is currently 78 years of age, meaning she was only 13 when she recorded the track.

This TikTokker explained exactly how we feel listening back to the track – it’s hard to picture that a literal child is singing:

@roryeliza

No way

♬ original sound – 𝚁𝚘𝚛𝚢𝚎𝚕𝚒𝚣𝚊 ♛

TikTok users have shared a similar reaction to the news, with one person commenting ‘that is not possible’ while another said ‘wait what’.

Take a look at Brenda Lee at age 13 in the clip below:

Wild.

See Brenda Lee’s re-release of the track in the new music video below, just in time for Christmas!

Listen to Brenda Lee on iHeart radio below!