Heuchera 'Prom Dress' PP36610 CPBRAF Walters Gardens, Inc. Heuchera 'Prom Dress'. This new member of the DRESSED UP Series has large, ruffled, pewter leaves with charcoal veins. I've been happy with the other two members of this series, 'Ball Gown' Dressed Up 'Evening Gown' Coral Bells Heuchera hybrid Proven Winners Proven Winners 6" Yellow Dressed Up 'Ball Gown' Coral Bells Live Plant in 6.5" Pot Walmart.com Coral Bells Dressed Up 'Prom Dress' Proven Winners Perennials Proven Winners Direct New this year! Dressed Up 'Prom Dress' is the newest member of our collection of large, heavily ruffled coral bells whose size and unique texture makes them easy to pick out