Brooke's dress from ONe TRee HIll season five: episode: "Hundred"?

if you go onto the cw website and go into the subsection of one tree hill they have more subsections on the music played on the show and the clothes they wore...i would be surprised if you cant find it there cos thats where i found a previous dress!! they seem to wear alot of clothes from macys so im thinking it was more likely from there but i could be wrong!