Fixings for front bumper replacement

Hi guys - first post here - I need to buy a second hand from bumper for my daughter's 2008 1.2 Micra.
I want to take the old bumper off and put teh new one on the same day. Can someone please tell be what fixings I need because sods law the existing ones will break when removing the existing bumper.
This way I can order them in advance of doing the job.