If I could just generalize for a moment on collars in general, it would be a great piece of clothing to model considering how many variations of collars are available for fashion. My personal favorite would be an ivory lace collar with a black ribbon (gothic) but there are many others. Examples are black leather with chrome spikes (punk), bowtie, (playboy costume), a bell collar, (Cat girl costume) jewelry chokers and of course slave collar as mentioned. I'm sure there are plenty of other options I did not list here but you get my point. AChat should seriously consider creating this clothing line.