The record label boss Simon Cowell gifted them with champagne after winning MTV awards.
'The X Factor' 2010 contestants were each given a bottle of champagne by their record label boss at the Los Angeles event, despite being under the state of California's minimum drinking age of 21, reports The Sun newspaper.
The band won prizes Best New Artist, plus Best Pop Video and Most Share-worthy Video for their track 'What Makes You Beautiful'.
The band collected their second gong from singer Katy Perry.
Harry described the moment as ''incredible'' when receiving the statue.
He said to the crowd at the Staples Center: ''To win one Moonman is amazing, to win two is incredible.''
The SyCo boss tweeted on his account: ''Congratulations 1D. I'm very proud of you. Celebrate!''