the "white floral eyelet" sweater, by Sea NY.
it is actually in an offwhite/eggshell color, and is made of incredibly intricate, high quality, layered, cotton guipure lace, of flowers with 3-dimensional petals. 
it has a band of lattice lace around the upper chest/sleeves/back, with a fringe below that.
it also has more classic, ribbed knit sweater hems.

new, with tags, for $398. no longer available in stores.

MEASUREMENTS:  
no real stretch.
38" bust.
35" waist.
22" long.
labeled size Small. 
remember that you'll probably be wearing this over something else, so give yourself at least a couple inches of wiggle room.