Montreal's sweetest street artist is Shelley Miller, who has been creating murals and graffiti pieces made entirely out of cake icing on walls all over town:

As a form of inscribing the shifting meanings and uses of urban space, Miller takes graffiti’s decorative dimensions to an extreme, adorning the visual landscape with the same technique that one would a cake complete with swirling piped borders and edible roses. Miller has been working with sugar for more than 10 years in her site-specific practice, engaging with issues of spectacle, consumer culture, excess, waste as well as the historical links between sugar and slavery…

Her works look amazing, but they must attract ants like crazy!

Link --via Laughing Squid