As we reported earlier, SNSD's YoonA has been advertising for the Korean cosmetic brand Innisfree, for which the song of the CF, titled 'Innisfree Day', was released a few days ago. A short music video for the song has just been released, which consists of YoonA singing in a studio for the recording of the track, as well as some behind footage of YoonA taking part in the photo shoot. Check it out below! Many thanks to whimsicalchild for the tip.