You can get a backless dress anywhere, but it takes a skilled designer to create one that looks stunning, elegant and sexy all at once. After all, you wouldn't want to look like a tart on the red carpet, right?

Here are 20 of the most gorgeous backless dresses of all time, worn on the red carpet:

1. Olivia Wilde in Marchesa, 2009
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2. Anne Hathaway in Armani Prive, 2011
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3. Emma Stone in Calvin Klein, 2011
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4. Naomi Watts in Zac Posen, 2013
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5. Eva Longoria in Zac Posen, 2011
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6. Charlize Theron in Gucci, 2004
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7. Kate Hudson in Emilio Pucci, 2004
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8. Hilary Swank in Guy Laroche, 2005
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9. Rooney Mara in Givenchy Haute Couture, 2012
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10. Rosie Huntington-Whiteley in Burberry, 2012
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11. Kate Bosworth in Stella McCartney, 2014
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12. Emma Watson in Chanel Couture, 2013
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13. Sienna Miller in Emanuel Ungaro, 2007
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14. Claire Danes in Calvin Klein, 2011
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15. Emily Blunt in Alexander McQueen, 2012
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16. Eva Longoria in Marchesa, 2012
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17. Heidi Klum in Michael Kors, 2013
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18. Emily Blunt in Calvin Klein, 2012
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19. Cameron Diaz in Stella McCartney, 2012
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20. Evan Rachel Wood in Gucci, 2012
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