Identity Crisis

If you are thinking of starting this quest line for your personal tabard, it's worth knowing up front that the final quest requires you to fly round the dragon isles questioning 8 individual NPCs and you cannot speak to them unless you have done all the side quests related to that NPC. (Step 5 in slashtwo's post below).

So worth looking ahead to that quest first to see which NPCs you will need to speak to so you can start the quest line on a character that has already done most of the side quests related to them! (And one of them requires a chunk of the Onahran Plains main campaign to have been done even to unlock the side quests by the looks of things.)

I was lucky in that I started this one on my main and had actually done the sides for half the 8 characters so was only an extra 15 or so additional quests I needed to do... If I had started on one of my many alts it would have been a lot longer - or I would have had to abandon halfway through and then pick up on my main...

Questline:
1 Identity Crisis
2 Who Are You?
3 Gather Your Rosebuds and 4 Don't Threaten Me With a Good Time
5 Dragon Isles Adventuring: Being Yourself
6 Keeping a Close Tabard

This is the first quest in the quest line to get your personal tabard.