The lives of chihuahuas everywhere were ruined the day Taco Bell and Paris Hilton decided to team up and start treating animals like toys that you can dress up. Nowadays it seems like everyone is forgetting the fact that animals were designed to run around naked, and creating all kinds of outfits to torture them with.
I have to admit that I did dress my dog up like a princess one Halloween, so technically I am not against it, but some crazy people in this world (Lisa Vanderpump) have gone so far as to believe their pets need clothes to live. Say what you will, but animals have always existed on this planet, even without our help. Dressing them up like us is only going to confuse the Hell out of them when zombies finally take over and they have to return to their feral states in order to survive.