Alphabet of Brooke Shields

This must be one of the most surreal scribblings I have seen in quite a while. What would the alphabet of Brooke Shields look like, do you think? I have a variety of unlikely contortions in mind, preferably the CK jeans (kinda SFW, but only just) version.

It turns out there are a lot of these popping up all over London....there's even a Flickr stream.

UPDATE: and a map!

{on the wall of the Scala, King's Cross}