Luke poked through the rack of costumes, and found a couple of large canine costumes that looked really good. One was of a tan Great Dane, the other was one of those big police dogs, a German Shepard. The Great Dane was obviously male, a lot bigger than most humans there. The Shepard turned out to be female, with a second opening below the anus and two rows of nipples.
Both costumes looked real, almost like they had skinned dogs. But the insides were lined, and the costume seemed stretchy. There was a sign over the rack 'Remove all clothing and jewelry before wearing costumes.' There was a curtained changing room behind the rack, and he decided to go in there.
The changing room was a little different than most he had seen. It was a lot bigger, for one thing, and had mirrors on all three walls. But there were no hooks or shelves for his stuff - instead, there was a bin on the floor.
After pulling the curtain shut, Luke pulled off his clothes and put everything in the bin. It was weird to be naked, but he was going to make sure he did this right. Picking up both costumes, he looked them over once more, then decided to put on the...