
Image by Jewel Samad / Getty Images

Official White House Photo by Samantha Appleton

Image by Lise Aserud / AP Photos

Image by Chris Jackson / Getty Images

Official White House Photo by Pete Souza
Dear Monsieur Alaia,
Please give us a sign if the beautiful gown and jacket the first lady is wearing are your creation. The craftsmanship is exquisite.
Best,
Mrs. T & Friends
Update #1: Please have a peek at this image from the Alaia Spring 2010 collection via Red Carpet Fashion Awards. Though there wasn't much question, this is almost certainly the work of Azzedine Alaia.
The more we admire this ensemble, the more we feel in awe. From the finely articulated ribbons of beadwork to the trademark Alaia ruching through the skirt, it is an absolute inspiration. It is the kind of craftsmanship that seems of another era.
As has been observed in the comments, the choice of silver blue, a new color for the first lady, does seem thoughtfully chosen for the Nordic locale.
A fabulous analysis from reader Mark:
"I'm speechless. She looks incredibly beautiful here! I feel like this dress and the jacket she was wearing with it are so perfect for Norway. I've never been there, but I've always had this sort of fairytale image in my mind of Norway. An ice-crystal and snow flake wonderland. Princesses living in palaces carved of ice. Clear, crisp nights with the smell of snow and ice in the air .... That dress, and the way she looks in it, is the embodiment of that image. What a fabulous look, and what a wonderful gesture to her Norwegian hosts."
Update #2: Our tremendous thanks to Jessica Michault, Online Style Editor for the International Herald Tribune, for confirming that indeed, Azzedine Alaia is the designer behind Mrs. O's dress and jacket.