Interesting to note that this also isn't Anita Garvin. XD She's the one that slips and sits down on the pie later in the scene. This is the lovely Miss Dorothy Coburn's fine derriere taking that pie.
Long ago I had several pictures saved from this set that I downloaded back in the mid-90s from the MPV BBS. Unfortunately I lost them in an old-to-new computer transfer sometime around 2005ish. :(