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Pétronille | Timeless Elegant Dress

£59.95

£121.95

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Color White
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A Dress That Lets You Feel Like You Again

There’s a moment every woman knows well — when you slip on a dress and instantly feel graceful, confident, and beautifully yourself.
That’s exactly what this long-sleeve lace dress was made for.

Soft on the skin, flattering around the neckline, and designed with elegant lace sleeves that add just the right touch of sophistication… it’s the kind of piece that makes you pause in the mirror and think: “Yes, this feels right.”

Many women choose this dress because they want something effortless:

  • Something that looks polished without trying.

  • Something comfortable enough to wear all day.

  • Something that gives confidence without being too bold.

And if you’ve been wondering whether a knitted dress will flatter your shape… whether the sleeves feel soft… or whether it’s right for dinners, gatherings, or simply feeling beautiful at home — this dress was designed with those exact questions in mind.

It’s timeless. It’s comfortable. And most importantly — it’s made to celebrate you.

    SIZE CHART (INCHES)

    SIZE US SIZE BUST (INCHES) LENGTH (INCHES)
    S 4–6 36.2 39.4
    M 8–10 37.8 39.9
    L 12–14 39.4 40.6
    XL 16–18 41.7 41.1
    2XL 20–22 44.1 41.7
    3XL 24–26 46.5 41.9

      At Thornby & Co, customer satisfaction comes first. That's why we keep you constantly updated on your order and always offer free shipping. We use the reliable delivery services of Royal Mail.

      Doesn't fit? No problem! You can exchange or return it within 30 days.

      At Thornby & Co your peace of mind comes first. That's why we offer 100% secure payments by credit card. Buy with total confidence.

      At Thornby & Co, we believe great service is just as important as great style. That’s why our customer support team is always ready to help — with fast responses, clear answers, and genuine care. Whether you have a question about your order, need assistance with a product, or simply want reassurance, you can count on us to be there. Your experience matters, and we’re committed to making it smooth, personal, and worry‑free.

      Please contact us at info@thornbyco.com

      Sarah J. ✓

      and 7,458+ women love and recommend Thornby & Co

      WHAT OUR CUSTOMERS SAY

      The dress feels beautifully made and fits so comfortably. I received so many compliments.

      I rarely find dresses that make me feel this confident. The fit is elegant and very flattering.

      Lovely quality and easy to wear. The colour is even prettier in person.

      I wore this dress to lunch with friends and everyone asked where it was from. It made me feel confident and stylish.

      I wore mine to my daughter’s birthday lunch and felt so confident. Everyone commented on how elegant it looked.

      The fabric feels light and comfortable, and the shape falls beautifully. Perfect for a special occasion.

      My order arrived quickly and the dress looked just like the photos. I would happily order again.

      FAQ

      Is shipping free?

      Yes, we ship in United Kingdom with Royal Mail, for the fastest and most reliable delivery. Free express shipping in all orders.

      How do I choose the right size for me?

      We recommend checking our detailed size chart, available on every product page. If you’re between sizes or unsure, it’s usually best to go one size up for added comfort.

      Not satisfied with your order?

      We stand by our promises — but the truth is, you won’t really know until you experience it yourself. That’s why we offer a 30‑day money‑back guarantee on every order. If you’re not completely satisfied, you can return your item at any time for a full refund.

      Do you store my payment details?

      No, we do not store your payment details. All payment processing is handled securely by trusted third‑party providers.

      How can I contact customer support?

      You can reach us via our support email at info@thornbyco.com. Our team typically responds within 24 hours.

      Customer feedback

      Loved by Women Across the UK

      4.8

      Based on 7,458 reviews

      5★ 6,737
      4★ 635
      3★ 70
      2★ 14
      1★ 2
      5 hours ago

      Elegant shape and easy movement

      The flowing shape creates an elegant look while still feeling easy to style for a wedding or summer occasion.

      1 day ago

      A beautifully flowing maxi

      The full-length shape creates a graceful, feminine look that feels right for dinners and celebrations.

      Free delivery throughout the UK

      Every order is sent across the UK with Royal Mail — carefully packed, fully tracked, and completely free of charge. No hidden costs, no fuss. Because the moment you order should feel just as good as the moment it arrives at your door.

      30-Day Return Guarantee

      Not quite right? You have a full 30 days to send it back — no awkward questions, no rush. We'd rather you love what you keep than settle for something that isn't you.

      100% Secure Payment

      At Thornby & Co, every payment is protected by a secure, encrypted connection. Choose the method that suits you best and shop with complete peace of mind. Your details stay yours, always.

      24/7 Customer Support

      Questions about your order? Our support team is always here to help with products, delivery and returns.

      Contact us at info@thornbyco.com