The miniature duo – who impressed judges in the first audition with their anti-bullying inspired song – have already been tipped as future stars, even appearing on the Ellen show, in the US.
Following closely behind the pair are boy group Collabro and opera singer, Lucy Kay.
Lucy Kay is also one of the favourites to win tonight's show
Also in the running to bag tonight’s prize are: singers’ Jack Pack, illusionist Darcy Oake, violinist Lettice Rowbotham, dance group, The Addict Initiative, the AMAZING dance trio, Yanis Marshall, Arnaud and Mehdi, Paddy and Nico, young crooner James Smith, and impressionist Jon Clegg.
The winner will recieve a cash prize of £250,000 along with a slot at the Royal Variety show.
Who do you think is going to win tonight?
We’ve got our money on Lucy Kay.