Now that Jer had Jon fully dressed, he had to work quickly to change Jon's face as much as could be done. He used a lot of his theater quality makeup to expertly change Jon's face ever so slightly.
The last thing was the voice, which Jer explained to Jon how to speak in such a way that would not draw to much attention to him. The worst part would be later in the day when he would have to give a speech at the reception, which thanks to Zoe running away, was now on him.
Jon needed a way out of this for a minute, so he did the only thing he could think of, asked for help to go to the bathroom.
While everyone was upset, they realized they better get this done now before the rest of the girls got here and they had to explain to them why Zoe looked different today.
As Jer helped Jon into the bathroom and out of the dress, Jon was relieved to see the stone on the sink, and grabbed it.
Holding it tightly, and trying to quickly fix this mess, he uttered the famous last words, "I wish..."