Do you mean this one?

Its by ‘Red’ Valentino
‘Clara Whispering Chemise,’ by Stella McCartney :)
Yep its The ‘Neoprene’ pleated skirt by T by Alexander Wang.

At LAX airport | November 30
Blake Lively’s everything appreciation post, GG 6x07
The sweater is by Giada Forte and the pants are by ‘Rag and Bone.’ You can get similar cheaper pants at urban outfitters: http://www.urbanoutfitters.com/urban/catalog/productdetail.jsp?id=25246430c&cm_mmc=Performics-_-Affiliates-_-WWZDW%20(What%20Would%20Zooey%20Deschanel%20Wear)-_-Primary%20Banner&clickid=0004cef5d832c98d0a42bf442f005337
Hope that helped :)