There’s a fine line between looking over-the-top good and over-the-top bad. These talented women managed to cross the line from rocking to shockingly ugly, even for the Grammy Awards.

Miley Cyrus in Roberto Cavalli. The teen sensation seems to be dressing how she thinks a rock star should dress. A 40-year-old rock star, that is.

Eva Longoria in Ashi Studio. Believe me, we are thrilled that Longoria isn’t wearing a mermaid-style strapless gown again. But the newly single star is evoking images of a cocktail waitress in her black and white getup.

Rihanna in Jean Paul Gaultier. This sheer paneled gown has us longing for the feather frock she wore to last year’s Grammys. The horizontal stripes don’t do her smoking body any justice.

Katy Perry in Giorgio Armani. Wings? Check. Sparkly bra? Check. Iridescent skirt? Check. Katy Perry’s red-carpet ensemble has all the makings of a Victoria’s Secret Angel Halloween costume.

Ciara in Emilio Pucci. Ciara took Grecian chic a bit far with her daring patterned dress and hard-core sandals. We applaud her for trying to stand out from the crowd, but sometimes less is more.

Photos from left by Jason Merritt/Getty Images, Steve Granitz/WireImage, Steve Granitz/WireImage, Steve Granitz/WireImage, and Steve Granitz/WireImage