Free People Ruby Jacket Shacket NWOT This jacket is meant to be worn oversized. Pit to pit difference between each size is 1" so in actuality it doesn't matter what size you get, it will fit oversized. XS pit to pit is 23" so S is 24" and M should be 25" respectively. I am a size 12 and I own different colours in different sizes ranging from XS to L and they all fit me almost the same way. Reposhing this item I purchased from @jruby1023. Loved it, but ready to rotate for something new. Didn’t get a chance to wear them. Just decluttering my collection. Questions? Leave a comment below!