I actually stumbled upon this by accident, and just wondered where it's from. It appears to be model Carla Cressy getting pied rather nicely. I've asked her on Twitter (actually had to create a new account to avoid using my personal one ), but haven't heard back. Does any UK-based producer want to lay claim? If so, when is it out? Cheers.
On Carla's twitter (the @carlacressy account, she seems to have at least two different twitter accounts), there are some very brief flim clips of a very messy scene she did with another model. This other scene was paid for by WAM Shorts, who says it will be available for sale in his store in a few weeks. Filming of this scene seems to have happened within a day or so of the pie custom pictured above (or at least the photos for both were posted April 1-2.)
Yeah I did look at the dates, and figured it was feasible that this was a scene that just hadn't been edited/released by a producer yet. Although, as Pinhead says, it's probably more likely to be a custom that will sadly never be released publicly...