Six different version of the same design. High indicates a higher (duh) poly count and Indent has a space in the bottom for a hair clip to be glued in. The last two are high poly with no indent but have been halved. Hairclip_Base_High_Halves_Reg.obj has a piece that inserts into either side to help with alignment.

Edit:

I've come back to this model to modify it into a three piece print. Now the model doesn't have to be painted for the two colours. The parts need to be glued together with hot glue. Also there is a channel cut in the bottom for a 40mm long 6.5mm wide barrette to be attached. 

There are two versions of the back piece. One without a built in support and one with. I've have better results printing the supported one but it may be different for you.