Matthew Morrison: We're covering One Direction's What Makes You Beautiful on Glee
1D landed a No 1 with their debut album Up All Night in America this month and are also rumoured to have their own Nickelodeon show.
'I've just heard of them,' says Matthew, 33.
'They're really taking over in the States.'
Matthew, who admits he'll need to YouTube the track to practise for his performance, reckons the song's appearance on the hugely popular musical soap will do good things for the band.
'They've made it now though, they're on Glee!' Matthew tells The Sun.
'This will probably help their record sales too.'
The news comes a month after it was announced fellow UK group The Wanted's track Glad You Came will feature in Glee.