When one of our favorite Kates  (be it Middleton  or otherwise) steps out in a Jenny Packham gown , you know the style stakes are high. And if that appearance should come on a Sunday, well that's guaranteed to be one very chic week.
Sure enough, Kate Beckinsale  started a streak of fashion when she arrived for London's Empire Film Awards in a cutout column from the designer. And that was just the beginning. Jennifer Connelly  did her part a few days later in Alexander McQueen  while Shailene Woodley rounded out the week in Donna Karan  Atelier. See all the looks we loved on some very chic ladies.
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Shailene Woodley cemented her Hollywood star status with Donna Karan  Atelier's dramatic red gown at the Madrid premiere of Divergent.
Katy Perry  is known for unexpected choices, so we knew there'd have to be a twist with her black Versace  Collection gown at MOCA's 35th anniversary gala. Sure enough, a neon yellow lining provided all the surprise we needed!
Kate Beckinsale  couldn't be missed in her sexy Jenny Packham  gown that featured a mulberry-red hue, side cutouts, and Swarovski  crystal trim.
Jennifer Connelly  brought April flowers to Noah's Spring showers while wearing Alexander McQueen  at the film's London premiere.
Joining her on the red carpet in a markedly minimalist look, Emma Watson  was simply stunning in Ralph Lauren  Collection.
What other woman? We only had eyes for a Dior-clad Cameron Diaz  at her film's Amsterdam premiere.
Cobie Smulders took the plunge in Sportmax 's dramatic belted navy gown at the Cinema Society screening of Captain America: The Winter Soldier.
If early looks like Dianna Agron 's printed gray dress is proof that Nicolas Ghesquière's debut Louis Vuitton collection  is a hit with the stars.
Jessica Paré took a modern turn in her asymmetric green sheath at the season seven premiere of Mad Men.
At The Humane Society Gala, Kate Mara looked at once edgy and sweet in Balenciaga 's black-and-white look.