Here is my honest comment........
I was never into indoor animals. Everyone around me was getting mini dachshunds. I used to roll my eyes whenever they would refer to their pups as their babies. I just didn't get it. I loved my pets (outdoor pets, mind you), but that is all they were. Just within the last couple of years, possibly even before the mini dachshund craze in my group of friends, I went into a pet store and absolutely fell in love with a pup. A yorkie pup. I took his picture on my phone and saved it as my wallpaper. I knew we couldn't afford a $1200 dog. Fast forward to late October. Bella, a Boston Terrier that we were keeping for dh's friend, went missing. The kids loved her. Dh didn't care for her too much. To be honest....she smelled like a dog. A dirty, wet dog, even after her bath. He never could get close to her (dh that is). The kids kept sneaking her in the living room, and would just cuddle with her on the couch. So, I was just looking at kijiji.com. And I spotted him. A beautiful teddy bear faced yorkie, and for only $400!!!! It was really love at first site. I took a picture of his picture and sent it to dh. He decided to give in. He said it could be my Christmas present. I felt so guilty though. I called the woman to see if he was still available. That was on a Thursday. We went and got him on Saturday. We were/are officially indoor dog people now. Now, I talk just like my friends. Refer to him as my baby. Dress him up when I can. He goes with me everywhere I can take him.

I have this need to buy him things whenever I go to the store. lol Spoiled much?!? Love him!
So, that is my story. I don't think people can truly understand until they have one. I don't understand her maliciousness. You dressing up your dog does not affect her in anyway. And, your dog is not in danger from you dressing her up. It is none of her business. Period! Even before I got Maximus, I didn't tell them I thought it was silly. It was more of an inside joke between my bff and I. She STILL doesn't like indoor dogs, and now I'm the enemy.

(just kidding) lol