The Middleton sisters may share the same surname and glossy brown hair, but another thing they both appreciate is a stylish and flattering outfit.

In Scotland on Saturday, Pippa Middleton, 28, stepped out at a friend's wedding in a $575 raspberry Issa wrap dress, which she paired with a matching fascinator.

It was the same silk jersey design that Duchess Kate, 30, wore in November 2010 when she and her husband Prince William announced their engagement. The shade of her dress channeled her sapphire engagement ring, which once belonged to William's mother, the late Princess Diana.

This isn't the first time the Middleton sisters have had a sibling rivalry in the form of copying each other's wardrobe. Earlier this year, they both worked the bright denim trend. In December 2011, Pippa sported the same $1,125 Katherine Hooker coat that her sister wore eight months prior.


Who Wore It Best: Kate Middleton or Pippa Middleton?

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Who Wore It Best: Kate Middleton or Pippa Middleton?