Starting from the left:
Real Techniques Foundation Brush
Since I discovered the buffing brush, I mainly use this on my nose and for under my eyes as more of a concealing/small area brush. As far as those kind of paintbrush style brushes go, this one is great. The bristles are at different heights so it's at a bit of an angle, which is really good for under the eyes and around the nose.
Real Techniques Stippling Brush
Ultimate favourite. Amazing for anything pretty much. It's great for foundation, blush...
I use this for my cream blushes, often for highlighting and even contouring sometimes when I'm feel crazy.
Real Techniques Blusher Brush
I love this for... blusher. It's really nice and soft, I have nothing else to say about it.
Real Techniques Buffing Brush
I bought the Core Collection just for this and sold the others. I use it for liquid and mineral powder foundation and it really is amazing at giving your skin a really even, flawless look.
The Body Shop Blusher Brush
From one angle this is wide enough to be a blusher brush but then from another it is quite thin, so I don't use this for blusher anymore. I use this for highlighting and mainly contouring. The Body Shop brushes are nice and soft though.
The Body Shop Lip/Concealer Brush
I rarely use this to be honest. Sometimes for lipstick if I am trying to be super precise but that is about it.
The Body Shop Eyeshadow Brush
This is a really simple, standard eyeshadow brush but it does the job!
ELF Eyeshadow Brush
I found this in my drawers and figured it must belong to one of my sisters...so I adopted it. I use this at the moment as a blending brush because I don't currently own one!
So there you have it. Those are all my brushes, not very many I know. I do also have an eyelash/eyebrow comb brush but I don't feel like that counts.
What other brushes do I NEED in my life?