Point of fact: Bloomers were not worn during the Elizabethan era. What did they wear? Well, they wore a heck of a lot of clothing, but no underpants of any kind. Honestly, it makes sense. If you have multiple layers of skirting held out by hoops, it's hard enough to use the necessary without adding the additional step of dropping your drawers. My historical costuming is accurate in my novels (with the exception of me saying 'hoops' rather than 'farthingale' -- it has to be accessible to non-Tudorophiles).
I do wear bloomers when I'm in Elizabethan garb. This is mainly for my own comfort and modesty, but also for hygiene purposes. It gets dusty in Southern California and walking along in hoops can cause a miniature dust-devil under your skirts.
I found the below clip based on one of the searches I found in my blogspot Stats page that lead the unwitting searcher to me. What he wanted was:
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