You can read the first 20 pages of Peter Pan & Wendy (illustrated by CLAMP) in Kodansha’s website (click on the cover). There are 3 black and white illustrations by CLAMP in the preview.
Update: To those interested, the book can be purchased via Yesasia.com.
In other news, there is a XXXHOLiC event going on in Akihabara that will run until the 14th at Dear Stage to celebrate the DVD Boxes releases.
Episodes from the XXXHOLiC TV series are being screened and a Gallery showing the production process of the DVD Boxes is being held.
The shop is decorated with XXXHOLiC theme and its employees are wearing XXXHOLiC costumes. Also, food and drinks similar to those featured in the XXXHOLiC anime will be on sale.