For the Happy D.2 line, Sieger Design updated its Happy D. collection from 1998. Like the initial configurations, Happy D.2 has a curvy, D-shaped silhouette. The proportions have been slightly refined and the furniture now comes in a linen-fronted option, shown here on the vanity and wall storage.  Photo 1 of 4 in ABCs of Bathroom Design with the Brothers Sieger