Since I always find it fun to try to find out who Joanna is wearing, I thought I'd make a thread compiling all of the pieces that she owns that I have been able to identify. I don't know if anybody else will find it interesting, but if nothing else, it gave me an excuse to peruse the Style.com for a couple of hours.
Lover the Label - Spring 2006
Alexander Wang - Fall 2007
Christopher Kane - Fall 2007
Chanel - Spring 2008
Ralph Lauren - Fall 2008
Narciso Rodriguez - Spring 2009
Commes Des Garcons - Fall 2009
Christopher Kane - Resort 2010
Christopher Kane - Spring 2010
Christopher Kane - Resort 2011
L'Wren Scott - Spring 2011
There are tons more that I haven't been able to identify, so if you know any others, please post them! I'd be particularly curious to know about a few of the black dresses she's worn on tour, and the green dress she wore to the Emmys.