Jedward cover Justin Bieber's 'Boyfriend'
In a video posted on the Irish duo's YouTube channel, Grimes took to the acoustic guitar and performed a stripped back version of the song.
It seems Jedward have got the cover bug recently, with the pair also recording a dedication to the late Beastie Boys co-founder Adam 'MCA' Yauch.
Jedward meanwhile have recently unveiled their unofficial anthem for the Ireland football team's Euro 2012 campaign.
They released a video for the track which features a number of guest cameos, including one from X Factor judge Louis Walsh.
Watch John Grimes' cover Justin Bieber below:
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