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The Duchess of Cambridge may have packed no less than 40 designer dresses for her North American tour, but it seems like she only included one pair of jeans in her royal luggage.

Kate Middleton, 29, has been spotted wearing J Brand "811" mid-rise skinny leg jeans three days in a row.

On Monday July 4 she sported the pants (which retail for about $169) with Sebago Bala shoes while competing in a dragon boat race with husband Prince William.

The following day she wore the same denim on a visit to Yellowknife, Canada with a Burberry shirt and Sebago Bala shoes.

And on Wednesday July 6 Kate paired the jeans with a navy Smythe blazer, a white ruffled shirt and Nine West Cheyanne wedges at the Yellowknife airport where she boarded a plane for Slave Lake.

On Saturday the couple will walk the red carpet with British TV, movie and theater stars for the BAFTA reception at the Belasco Theatre. As President of BAFTA, William, 29, will make a brief speech for the star-packed gala.

For much more secrets of the royal visit -- including a photo diary, Kate's baby talk and their intimate dates -- pick up the new Us Weekly, out now!