Where has Kim Kardashian been? In Rihanna's closet!

On Friday, the reality star stepped out in the same navy blue Givenchy dress that the "We Found Love" singer wore in NYC exactly one week before.

Kardashian, 31, paired the curve-hugging number with Christian Louboutin python heels and her "Mason <3's Penelope" nameplate necklace by Jennifer Meyer, which was a gift to her and her sisters Kendall and Kylie Jenner from mom Kris Jenner. (Sister Kourtney Kardashian welcomed baby No. 2, Penelope Scotland Disick, into the world on July 8.)

The Givenchy dress was a rather conservative choice for Rihanna, 24, who always manages to turn heads with her nipple-flashing, midriff-baring street wear. The Grammy-winning artist topped off her look with gold necklaces and matching metallic heels.

As it happens, Rihanna is a longtime pal and former protege of Jay-Z, whose best friend and collaborator, Kanye West, has been dating Kim for several months.

Tell Us: Who do you think wore it best?

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2,687 Votes
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7,381 Votes

Watercooler Poll

Who Wore It Best: Kim Kardashian or Rihanna?

Kim
Rihanna