The Whisper Feather Pendant is 18 inches by 30 inches and covered in thousands of white feathers. It sells for $500.
Laura Gummerman at A Beautiful Mess made a DIY version using a paper lantern and eight rolls of white feather trim. The DIY version cost about $150.
Gummerman used a hot glue gun to glue the trim to the lantern. She then used a pendant light kit to hang the light from her ceiling.
See the complete tutorial at A Beautiful Mess.