UV/Image editor problem - can't see image detail

I’m UV unwrapping an eyebrow mesh and using a png image for the texture - black hairs on a transparent background. The entire image shows black in the UV/Image editor so I can’t match up the UVs with the texture. Probably an easy fix?

Yep. There is a button waaaay over on the right that will will show the image’s alpha channel. Near the ‘enable texture paint’ one

Thanks, much appreciated.