J Crew Kelly blouses are currently $39.99 for a variety of colors, including white and black. The regular retail price is $54. It's a 3/4 sleeve blouse, FYI. You can save an additional percentage discount with the HOHOHO promo they are running through 12/11/08.
I love the fit and how it feels on the body. It's slimming. FYI, this is a size S and I am a 34C. It's has nice long shirttails. They look good out, but are also long enough to tuck in and that's a great option. The white is crisp and clean. Not blinding diamond white. Just a nice, true white.