We were taking bets yesterday on who the mystery fashionista in Topshop's Winter Wonderland campaign is - and now the brand has released the second tantalising teaser in the series.

RELATED: Topshop Launched 'Who's That Girl' Winter Wonderland Campaign

So who is the lady in the sparkly red dress - (which is already on our Christmas wish lists?) - we'll find out on December 4, but in the meantime you can take a guess on Twitter (@Topshop_AU) with the hashtag #WhosThatGirl.

Happy guessing!