Here’s the illustration that CLAMP drew for this month’s issue of VOGUE NIPPON magazine, scanned by flowright.

Click to go to a photo album with enlarged versions.
The illustration features fashion designer Karl Lagerfeld. That same illustration became a T-shirt that is currently being sold at the VOGUE NIPPON × Comme des Garçons MAGAZINE ALIVE store (seen in one of the pics above).
The store is a collaboration between VOGUE NIPPON and the label Comme des Garçons to celebrate the 10th anniversary of the magazine. The store officially opened on May 28 in Tokyo and will run for 6 months. The T-shirt will be sold as long as the store lasts.
This is part of a collaboration project between 7 manga artists and 7 fashion personalities:
Karl Lagerfeld × CLAMP
Marc Jacobs × Egawa Tatsuya
John Gagliano × Moto Hagio
Donatella Versace × Monkey Punch
Hedi Slimane × Yamato Waki
Gisele Bündchen × Makimura Satoru
Coco Rocha × Peach-Pit
Mainichi has pictures of all the T-shirts.