Refinery29 reports that Uniqlo is teaming up with local designers Costello Tagliapietra on a line of office-friendly dresses. Calling something "work-appropriate" is often the kiss of death in fashion (just ask Talbots or Ann Taylor, both of which are desperately trying to revamp themselves) but the CosTag/Uniqlo collection manages to be sophisticated rather than corporate. Ready for a sentence we never thought we'd type? Here goes: We're especially charmed by the waistless chartreuse number. Head over to Refinery for more photos.