Taking YouTube by storm with approaching a million views in a matter of days, its lingerie retailer La Senza's Cup Size Choir - orchestrated by Aneil Karia. Each girl -from A to G - is a musical note, and lying in a line, make up a gigantic keyboard, la-laing to familiar Yuletide refrain, Deck The Halls.

Just as it goes, this is one of those 'how did no-one think of this before' ideas (or we've just reached a post-feminist moment when they could get away with it), but the really cute stuff is on the Cup Size Choir website, where all kinds of naughty interactive musical fun can be had.

Use your own keyboard to activate the 'notes' the girl's sing, as they lie in a state of eager anticipation, and become inspired to write your own Christmas carol, dubstep anthem, or, frankly, any old rubbish.

And of course, you may actually get some ideas for presents...