Watch One Direction Kick Off Their Take Me Home Tour at O2 Arena [Video]

One Direction are finally embarking on their world tour in support of their sophomore album, 'Take Me Home' -- and luckily for Directioners worldwide, there's video!

The band kicked off their excursion in London at the O2 Arena. 1D performed a crowd pleasing variety of new and old songs, as well as their two famous covers -- 'Teenage Dirtbag' and 'One Way or Another (Teenage Kicks),' the latter of which Harry Styles urged fans to purchase because it's for such a good cause.

It's been a busy week for the British superstars. They just performed their aforementioned Red Nose Day single at the 2013 BRIT Awards, where they also took home the trophy for Global Success.

They sang beautifully. They danced (as best as they could, anyway). They goofed around adorably. They melted our hearts. And chances are, some of this footage will end up in their documentary that hits theaters this summer!

Watch One Direction Perform 'C'Mon C'Mon'

Watch One Direction Perform 'Rock Me'

Watch One Direction Perform 'Moments'

Watch One Direction Perform 'Live While We're Young'

Watch One Direction Perform 'Kiss You'

Watch One Direction Perform 'One Thing'

Watch One Direction Perform 'Summer Love'

Watch One Direction Perform 'She's Not Afraid'

Watch One Direction Perform 'Loved You First'

Watch One Direction Perform 'Change My Mind'

Watch One Direction Perform 'What Makes You Beautiful'

Watch One Direction Perform 'Heart Attack'

Watch One Direction Perform 'Teenage Dirtbag'

Watch One Direction Perform 'I Would'

Watch One Direction Perform 'Little Things'

Watch One Direction Perform 'More Than This'

Watch One Direction Perform 'Over Again'

Watch One Direction Perform 'Back for You'

Watch One Direction Perform 'One Way or Another (Teenage Kicks)'