Holly Madison has crossed over to the dark side ... or at least her hair has!
The "Holly's World" star flaunts a brunette 'do in the new music video for her "Peepshow" co-star Josh Strickland's single "Report to the Floor" -- which also has appearances from show regulars Angel Porrino and Laura Croft.
Check out the video above, then sound off below: Do you like Holly as a brunette?