For the benefit of all MS-1's with the same question, let me answer a private message I received here about OMM and anatomy lab attire.
Yes, you may wear scrubs. Many people did wear scrubs to anatomy lab. Just use something you don't plan to keep, because you will burn it in the bonfire ceremony when you finish anatomy. You will get an apron to wear over your attire, so don't worry about what you wear. Bring old shoes that you plan to throw away.
As for OMM, there is no special attire. It's pretty casual. I don't remember that many people wearing scrubs, but you can still wear them. As they will explain on the first day of OMM lab, you can wear casual clothes, but NOT jeans or something too thick. Your fellow classmate needs to be able to examine your spine and bones through whatever you wear. Sweats work just fine. Some people wore sweats for the entire day we have OMM. No, you will not have to disrobe. We palpate through the clothes. T-shirt, shorts, sweats, were what the majority of us wore.
Hope that helps. Post with any other questions. One of the worst parts is the uncertainty. That will end soon.