The abbreviated name of boyband One Direction. They placed third in the seventh series of The X Factor UK.
Predicted by industry experts as Britain's next big boyband, they have ignited hysteria across the country. Their book, "Forever Young: Our Official X Factor Story" has reached the number one spot on the Sunday Times Bestseller list.
Dannii: Have you been to the X Factor Tour? How was it?
Simon: Yes. It was great. 1D stole the show! They received the biggest cheers and had the most amount of merchandise on sale. They should just rename it the One Direction Tour.
Dannii: Matt Cardle's fans must be fuming with jealousy, huh?
Simon: 1D are the real winners of the X Factor. Everyone knows it.