VIDEO : Harry Styles Is the Most Protective Brother When His Sister Goes on a Date at One Direction

One way or another, Harry Styles is watching you! While performing at the Apple Music Festival in London earlier this week, the One Direction member was trying to sing the group's biggest hits as usual. His sister Gemma Styles was on a date and it just so happened to be right there at the concert.
Styles joked to the crowd "I'm sorry if I seem a little distracted, my sister's on a date and I'm trying to keep an eye on it. So just please behave yourselves, it's disgusting."