OH MAH GAWD ASDFGHJKL! 

Guys...

Luhan and Xiumin joined Instagram!!! (FRIK YEAY!) 

Right so Luhan's is @luexolu

and Xiumin's (it's rumoured that it's his but he has like 88k followers XD) @Xiurista90

And I think we all know Kris' by now but if not, his is @galaxy_fanfan

^w^

EDIT: it's been confirmed by Luhan that @xiurista90 is Xiumin's IG account ^,^