Lululemon Long Sleeve Heather Grey Top with a cut out twisted back detail 
scooped hem 
lace that feels like a light silicone appliqué 
color is a dark grey with a slight purple tint to it, not sure of the name

I'm guessing this is a size small bc the tag was cut out. measurements are below 

shoulders: 
pit to pit: 19"
waist: 18"
shoulder to hem length: 22" - 23"
sleeves: 25"/26"