In all seriousness, whoever has Jamie's gown really should return it. This isn't funny. It has a great sentimental value to him as his mother stitched his name into it and went to the further effort of buying him a special gown caddy to put it in.
I know that it must mean quite a lot to him as every high table, debating night, gown day, etc. that involves gown wearing he always brings it up.
If by chance whoever has Jamie's gown has picked it up by mistake please just return it to either of the aforementioned locations and I am sure no questions will be asked.
Also, if anyone else was at the KK thing or anyplace else that night with a gown, could you please just quickly check your gown to make sure you have not accidentially picked up Jamie's?