An Austrian noble feels conspicuous
Prince Charles de Clary-et-Aldringen was assigned to deliver a letter from Francis II confirming the proxy marriage of his daughter. The prince was ordered to Compiègne and then to a hunt, but he didn't have the right outfit with him so he had to borrow from French generals.
At the hunting rendezvous, another meal: it was the only time that I found myself at table with the Emperor. It was for me the strangest feeling in the world to be almost next to him, dressed the same as Savary, as Davout, as Duroc. I was wondering if it was really me. Lunch was a ten-minute affair. I was quietly having coffee when, looking up, I noticed that I was the only one there; I even thought I saw the Emperor smile with one of these gentlemen at the fact that the Austrian chamberlain was so leisurely; and at the moment I put down my cup in fear, we all got up.
[Following this is a hilarious description of the hunt. Napoleon kills a deer after many attempts and then asks the prince if he's ever seen such a lovely hunt. "Jamais, Sire!"]
(Souvenirs du prince Charles de Clary-et-Aldringen: Trois mois a Paris...) google books but it's only in French.