One Direction talked about filming 1D3D and performing “One Way Or Another” backstage at the 2013 BRIT Awards.
December 9th - Niall - Jingle Ball in New York City
December 13th - Niall performing on the 'Tonight Show starring Jimmy Fallon'
December 11th - Niall - Jingle Ball in Boston
December 12th - Niall - Jingle Ball in Washington D.C.
December 14th - Niall - Jingle Ball in Chicago
December 24th - Louis' birthday
(see the full list)