Call yourself a die-hard Directioner? Think again ’cause this is the hardest 1D quiz you’ll probs ever take.
To celebrate Niall Horan‘s birthday tomorrow, we’ve created a quiz that will test your skills like no other. All you have to do is guess which year each picture was taken by looking at his hair.
Challenge accepted? Don’t forget to brag about your score with a tweet to @maximumpop afterwards.