Best of 2009

Most Outrageous Faceoffs

From the dresses you can't believe were worn twice – to the stars you'd never imagine having the same taste! – see the most amazing match-ups of the year

DEMI VS. HEATHER

The ageless star hit an N.Y.C. party last year in her Zac Posen dress, while the Melrose Place actress returns home, shooting a scene as Amanda Woodward in the ruffled cobalt dress.