The Tartine cardigan fits TTS, similar to other Jcrew merino cardis. It has fitted shoulders and arms with a loose waist. For reference I consider the Jackie cardigans to for fitted all over, including the waist. I felt the arms in the Tartine to be too snug in my usual size to easily wear a long sleeve top underneath. This is a cardigan for Spring and early Fall, to be worn with short sleeves or a tank.
The ruffles are lovely and you could see them well around the neck with my hair up. I liked several of the colors, particularly the Maize (bright yellow with no brown undertone) and the Deep Persimmon (deep red orange, not neon). However, the Tartine just did not insist on coming home with me. If your closet is lacking cardigans, this is a good one to add but it is not a must have piece.
Retail description:Featherweight merino wool in a 14-gauge knit with silk chiffon ruffle trim at neck and hem. Crewneck. Rib trim at neck, cuffs and hem. Three-quarter sleeves. Hits at hip. Import. Dry clean. $88

Sizing: TTS
Overall: ***

See this item at Jcrew.com