A marching band serenade, an HGTV cheer and mascot Oswald the Tiger greeted the final five designers as they arrived for the season's fifth challenge on the campus of Occidental College in Eagle Rock, Calif.

Brooks, Tiffany, Boris, Jeribai and Anne enjoy the show as they wait for David to spill the challenge details.

This week's challenge? The designers will split into two groups and redesign common rooms for the Alpha Lambda Phi Alpha sorority and the Sigma Alpha Epsilon fraternity.

Tiffany and Anne took on the sorority house common room.