It's no secret I love my layers. I come by it naturally, my mom and sister are master-layer-ers too. When it comes down to it, I just hate to be cold (or hot haha) and I don't really care that much what I look like...so BAM, layers! You can always be the exact temp you want.
Me and my layering role-models; My mom, and sister.
Oiselle has certainly taken my layering to a super-master wazzie level. My favorite layer options:
Vigor Vest or Vim Jacket...if you put this as an intermediate layer (like over a wazzie and under a Cat Lady jacket), this combo can take you through some mighty cold temps
The Yeti (in all fabrics and flavors...of course!)