In preparation for Christmas and the premiere of this year's remaining Doctor Who specials, the BBC's official Doctor Who website launched their online advent calendar for 2009 earlier this month. The advent calendar will feature many exclusive treats over the next twelve days and door number thirteen on the calendar is now available to open due to the fact that today is the thirteenth of December. Behind today's door, there's a new video which goes behind the scenes with Louise Page to discuss her job as a costume designer. You can view this new video here and content from behind the calendar's previous twelve doors can be found here. This year's fourteenth door on the calendar will be available to open sometime tomorrow afternoon and details regarding the next special advent treat will be posted here on this site soon. What do you think of this new video?