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19 February 2013, 13:56
The hit period drama's stars can be heard in the ad-libbed version of the boyband's hit single.
One Direction's hit single 'What Makes You Beautiful' has been used in a new parody video featuring the cast of Downton Abbey.
The 'One Thing' stars' song has been mashed together with lines from the period drama to create the special version of the track.
"They way that you do your hair gets me flabbergasted," is used in the mash-up with a slight alteration to the track's lyrics in the chorus.
Maggie Smith ends the footage by saying: "Well now I've seen everything."
The footage features all of the show's biggest characters including Hugh Bonnerville, Michelle Dockery and Jim Carter.
Watch the cast of Downton Abbey performing One Direction's 'What Makes You Beautiful' below:
Meanwhile, the band have been teasing details from their new music video for charity single 'One Way Or Another'.
The track hit the number one spot on the Vodafone Big Top 40 this weekend and the band will perform the track during their appearance at the BRIT Awards tomorrow night (20th February).