I would suggest that the best way to get your cat to wear a tuxedo is to practice cat hypnosis. Fortunately, hypnotizing a cat is much easier than hypnotizing people. It only requires three easy steps.
1. Establish a connection with your cat.
The first step to hypnotize a cat is to to become its friend. Feed it, play with it, stroke its fur and talk to it smoothly with a calm voice. Build friendly communication with the cat and gain its trust. If the cat doesn’t accept you as a friend, it will be difficult to apply hypnosis techniques on it.
2. Lay The Cat Down
Now that you have gained the cat's trust, gently lay it down on its side. Stroke it for several minutes and keep it in a laying position with your other hand. But if the cat wants to get up, don’t force it and continue building trust through friendly communication. If you build enough trust, then the cat will easily comply when you lay it down.
3. Induce the Hypnotic Trance
As you continue to stroke the cat, begin softly speaking quiet affirmations, such as "You are such a good kitty", "Let your mind drift away", "Your paws are getting soooo heavy", and "The sun is so warm on your fur you just want to lie still forever". Try to form a mental image in your mind with each statement, as if trying to telepathically project your thoughts onto your cat. As your cat becomes calm and limp, slowly remove your hands from the cat.
Once your cat is in the trance, you can proceed directly to giving the cat suggestions as to how you want things to proceed. Do not give the cat direct commands, just suggest that it would look good wearing a tuxedo, and how much it would enjoy the monocle. Then suggest that you will be helping the cat to put these on after it wakes up, and that it will be calm and still while you are doing this. When you are finished with the suggestions, be sure and suggest that when you snap your fingers the cat will wake up remembering nothing.