As a newer player, availability is an issue. I've got a lot to work on, and farming up interesting glamour gear is a low priority for now. I was able to nab a lot of the thavnarian gear quite cheap on the AH and I can see what that would be a popular glamour. Starting outfits are quite skimpy as well, but do look great and lend themselves to mixing with other pieces. Of course, being a tank, I'm not going to run around in a bikini to fight in. Building a selection of nice armor parts that fit my taste is a bit of a challenge, but fortunately I like the battleskirt look, so there are several good options out there.

I've been trying to get a feel for how many choices there are for the major gear slots aesthetic wise. AH will give around ~150-200 results. Most of those are just re-textures of the same set of models, although the retexturing can be important for a look. That doesn't include dungeon and reward gear though, so there is a lot not included there. My rough estimate is ~50 unique models for a given main gear slot (chest, legs, head, boots). A lot of those are just going to be unpopular for one reason or another. That really cuts it down enough that you'll find people that look a fair bit like you even if you're not going the bunny-girl route.

One thing I do wonder about... if/when Viera race shows up, it's going to be very awkward considering the number of people wearing bunny ears already.