Kate attends film premiere in white gown by celebrity favourite Self-Portrait

The Duchess of Cambridge debuted a new dress on Thursday (Nov. 3) night as she stepped out to attend the London premiere of one of the year's most heartwarming films, A Street Cat Named Bob . Kate’s elegant white gown is from London-based brand Self-Portrait, a contemporary line beloved by top style stars like Jennifer Lopez, Beyoncé and Olivia Palermo.

TAP FOR GALLERY Kate stepped out in a floral lace gown by Self-Portait.

The floral lace maxi dress retails for $534 (£320.00) and features a sophisticated high neckline and floor-length crepe skirt with a high slit. The duchess wore a poppy for Remembrance Day and finished off her look by styling her brown locks in her signature bouncy blow out.

Other famous fans of Self-Portrait include Rachel McAdams, Kendall Jenner and Chrissy Teigen.

Before the film premiere, Kate visited Working Title Films for a special screening of The Recovery Street Film Festival. While there, she met with filmmakers to learn more about the inspiration behind their work before heading off to the Curzon Mayfair theatre to watch A Street Cat Named Bob.

The mother of two dazzled as she chatted with guests.

The movie is based on the true story of young homeless busker James Bowen, who struck up an unlikely friendship with a stray ginger cat he christened Bob. James nursed the tomcat back to health after finding him curled up in the hallway of his sheltered accommodation, and the pair have been inseparable ever since.

The mother of two attended the event in support of Action on Addiction, a charity of which she is patron. The duchess, 34, has been a member of Action on Addiction since 2012. The charity works across the addiction field in treatment, professional education to honours degree level, support for families and children, research, and campaigns.

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