Rosemary and Fidelity are both dressed in very smart officewear, satin finish pencil skirt suits that wouldn't look out of place in the boardroom of a multinational. And they've challenged each other as to how much Devon Dream they can stash inside their outfits before they start to leak. So those suits aren't going to be smart for much longer, though at first they only get messy from within.
Cream down their cleaveages is the first order of business, two pots of Dream each neatly poured in between their breasts and down inside their smart blouses. From outside their outfits still look pristine, but we know, and they can feel, the creamy liquid spreading and soaking its way through their clothes as they walk around the dungeon. Their third pot of Dream each goes down the backs of their necks, inside their shirts, with suitable squeals and reactions as the cold liquid flows down.
And now it's pie time! The challenge is only whose Devon Dream leaks first, so in the mean time, they are free to thoroughly pie each other, which they do with merry abandon, full force pieings straight in the face, with splatter going everywhere.
By the end of the scene, both girls are totally plastered from head to toe in custard and cream, hair and faces totally wrecked, and outfits utterly drenched in flowing sticky custard and cream.
That's how smart officewear should be treated!