Sprigs of lavender and other greens are taking root in wedding décor, including that of several star brides. At Tiffani Thiessen's wedding, Jennifer McGarigle of Floral Art in L.A. wove rosemary and olive branches through an antique gate and filled urns with garden roses, rosemary and mint. Thiessen's wedding cheesecake was decorated with sugared olive branches. Alicia Silverstone's aisle was lined with long-stemmed lavender, and actress Stephanie March honored her groom, celebrity chef Bobby Flay, with herbs in her bouquet.