From 1 December to 25 December, we will be giving away a daily prize..

To enter you must do something to help turn the city blue that day.

You can tweet using the #bluecrimbo hashtag, upload a photo showing how you're turning the city blue this Christmas, enter our Advent giveaway or submit and share your stocking in our Felli's Stocking competition.

Each day we'll then pick one user who has helped turn the city blue that day who will win the daily prize!