Blonde bombshell KATHERINE HEIGL ("Grey's Anatomy") is moving into her first house and HGTV's new weekly show "My First Place" (airing Saturdays at 9:00 p.m. ET/PT) is helping her primp up her new place!

According to Katherine, when she was renovating her classic "old Hollywood" style home, everyone was on their hands and knees cleaning the floor before the furniture truck unloaded her new furnishings.