Mariah Carey made up of makeup. (Click for larger.)
Jason Mecier is one of the most awesome artists of our time, not only for his excellent taste in subjects (Golden Girls, Margaret Cho, Showgirls, Anna Nicole Smith) or his freakish ability to make his portraits look like real-life photos, but also for the materials he uses to create each piece. [The Sun]
Mariah Carey (makeup products)
Anna Nicole Smith (trash and newspaper clippings)
Phyllis Diller (curlers, jewelry, old combs, miscellaneous items)
Check out more of his stuff on his site.