It was an event for the history books! Ellen built an outdoor stadium on the lot to house One Direction and 5,000 screaming fans! Take a look at these photos from the exciting day.
- Hillary Clinton Plays Who'd You Rather? Outrageous Patriotic Outfits Kanye Keeps It Real -- Extended! You've Found the Latest 'Finding Dory' Trailer The 'Ghostbusters' Cast's Past