Yes! You can sign up for it anytime and work through it at your own pace and schedule (as with all my classes). Visit the registration page here: https://classes.historicalsewing.com/p/victorian-undergarments

No. These undergarments are worn under the corset so measurements in a corset are not needed. However, for the lobster tail bustle and petticoat – those waistbands are cut to the corset measurement. But you could cut larger and make adjustments in the overlapping closure when the corset waist measure is known.

And do I need to have a corset made before I make the chemise and drawers?

Yes. The bustle is for 1870s and 1880s, but the chemise, drawers, and petticoat following the cutting for the 1890s shape are all accurate for the 1890s.

would it be historically accurate to use the undergarments in this class for a mid to late 1890’s outfit?

I’m not so sure it would. Of course the techniques might be repeated but the TV Edwardian undergarments are a little different. The instructions would help to a point but that TV pattern is made differently with a yoke on the chemise and the drawers having a different cut to the hem and narrower waistband. I would recommend this class for Victorian undergarments (even if not Truly Victorian patterns) but not for the Edwardian ones.