It's everyone's favorite episode of "HGTV Design Star", and now, premiering on Tuesday, April 24, at 9 p.m. ET/PT, The "White Room Challenge" is a ser... (more)ies all its own. For a shot at a $10,000 grand prize, some of the country's most successful designers and artists must design 10' by 10' white rooms using such outrageous elements as candy treats, dumpster-dived treasures or more than 1,500 flowers. Hosted by HGTV Design Star champion and Color Splash star David Bromstad, The "White Room Challenge" will feature such show stopping creative designs as wallpaper made from lollipops and pixie sticks and upholstery made of flower petals. While they will have the assistance of a carpenter, in the end, each contestant must impress an expert judging panel that features HGTV's Jamie Durie and a rotation of guest judges, including veteran television designer Thom Filicia; Meg Caswell, "HGTV Design Star" season six winner and host of Meg's Great Rooms; Going Yard's Chris Lambton and Dina Manzo of Dina's Party.