So, I'm taking a magnifying glass to those from some of R29's favorite brands to get to the bottom of who's actually making the closest-to-perfect version of this timeless wardrobe staple. While I wish I could've tried them all, I narrowed it down to six that claim to be the best in the biz. Read on for the honest reviews of each (along with a few additional options), and let us know in the comments: Who makes your holy grail white tee?