First off, it's not a Cami but a Tank. Here's some more info on it....
It's called the Cotton Silk Ruffle Tank. It is a combination of Cotton and Silk. It comes in the Light Shell (as seen in the above pictures), Light Pewter and White. It is available in size 0 through 14. It has a Classic Fit; Side Zipper; is Fully-Lined; and is Dry Clean only.
The price is $79.50 and is will become available online sometime either April or May. However... J Crew is starting to take Pre-Orders for them now.
If you are interested in Pre-Ordering this item, the item number is: 15820.
Will you be pre-ordering?