If you reckon your celebrity knowledge is A* and you'd totally get a Bachelors Degree in being a fan girl: we're here to test you.
Because you might know your Bieber from your Beckham, but how good are you with celebrity birthdays, ages and general knowledge of celeb time being spent on planet Earth? EY? 'OW GOOD?
It's kinda like a maths quiz, but more fun 'cos Zayn Malik's in it.
So go on, TEST YOURSELF. (Oh, and be sure to share your results with us @sugarscape thank youuu love youuu)
G'warn then. How d'ya get on?