DETROIT -- Just one of One Direction is apparently enough to please the screaming throngs of fans while the British group is on hiatus.That was certainly the case on Tuesday, June 26, when Harry Styles played to a packed Little Caesars Arena. Then again, Styles is arguably a first among equals from 1D, thanks to a once-iconic haircut and a successful move into acting in last year's Academy Award-nominated "Dunkirk.