The week before Halloween, it is difficult to tell if celebs are dressed up in costume, or if they just had a really, bad fashion day!  Dita Von Teese bared a striking resemblance to Elvira in this black gown, at the Cointreau Brazil party in Sao Paulo, Brazil.

PHOTOS:  See Holly Madison, Dita Von Teese, David Hasselhoff, Rod Stewart, Robert Pattinson, Monet Mazur, Cheryl Burke, Lukas Hass, Valentino, Catherine Zeta-Jones, Shania Twain, Nicky Hilton And Juliette Lewis In Fun And Freaky Fashions!

Holly Madison was not your typical Girl Next Door in a floral frock she wore to the opening night of Wayne Newton's show Once Before I Go in Las Vegas.  Costume or couture?  Check out the gallery to find out!

PHOTOS:  Check Out Heidi Klum's Halloween Costumes Over The Years!

• TAGS

• Style
• Best And Worst
• Catherine Zeta-Jones
• Cheryl Burke
• David Hasslehoff
• Dita Von Teese
• Fun And Freaky Fashions
• Holly Madison
• Juliette Lewis
• Lukas Hass
• Monet Mazur
• Nicky Hilton
• Robert Pattinson
• Rod Stewart
• Shania Twain
• Valentino