A formal evening ballgown with a deep velvet bodice, sheer bubble sleeves and a vast galaxy-tulle skirt — quiet fairy-tale drama for the grandest evenings.
Free express delivery worldwide · import duties included
The Petronia is a maxi bubble-sleeve velvet-bodice ballgown from the Faustina collection — a dress conceived in Rome for evening, dinners and the after-dark hours. The bubble-sleeve velvet-bodice ballgown is cut from structured crepe that holds a clean line, fully lined so it reads opaque in daylight and flash alike.
Like every Hugo Caesar Tassi piece, the Petronia is finished by hand: a concealed closure, real linings, and seams sewn to last. It is offered in 1 colors from the imperial palette — Cobalto — and built to be worn for years, not a single season.
| Silhouette | Square scooped neckline over a fitted velvet bodice, short sheer organza bubble sleeves, a defined natural waist seam and a very full floor-length ballgown skirt |
| Fabric | Deep navy cotton-blend velvet bodice with sheer organza bubble sleeves and a layered glittery tulle skirt with a faint galaxy ombre |
| Length | Floor-length maxi ballgown skirt |
| Occasion | Evening, banquet and formal black-tie dressing |
| Care | Dry clean only; store padded on a wide hanger to protect the velvet nap and the tulle skirt from crushing |
Fitted and boned through the velvet bodice to a defined natural waist, where the skirt releases into a full, floor-sweeping ballgown shape over soft tulle.
Model is 173 cm and wears size S. Available XS–XXL.
A true floor-length maxi: the bodice runs close to the body while the skirt is generously full, so most will find their usual size sits cleanly at the waist.
Complimentary express shipping worldwide; dispatched within 1–6 business days, import duties included. Most orders arrive in 3–6 business days.
30-day returns on unworn items with tags attached. Each piece arrives in a porphyry box with the HCT seal.
For evening, pair the Petronia in Cobalto with fine-gold jewelry and a barely-there heel. Add the Faustina silk scarf at the neck or wrist to complete the look.
Keep reading & explore the edit
Petronia™Cobalto · Select size
Hugo Caesar Tassi cut Petronia for the Faustina collection — a formal evening gown built on one romantic idea: a deep velvet bodice above a skirt the size of a small night sky.
The bodice is fitted and structured, in a deep navy velvet that drinks the light, finished with a clean square neckline and short bubble sleeves of sheer organza gathered soft at the shoulder. It sits close to the body and falls to a defined natural waist, where a single seam marks the change from velvet to tulle.
Below the waist the dress becomes a true ballgown — layer upon layer of fine tulle holding a full, sweeping shape to the floor. It is evening dressing kept to one clear silhouette, romantic without fuss, made for the occasions that ask for a little ceremony.
A deep Cobalto navy through the velvet, the tulle skirt shifting to a soft aubergine glow with a scatter of fine star-like sparkle.
The velvet reads as a single deep midnight tone, while the layered tulle of the skirt carries a faint galaxy ombre — navy melting into a warm purple at the hem, lit with a fine dusting of sparkle that catches golden light as she moves.
Petronia is offered in this single midnight colourway, the one tone the atelier makes it in. It needs nothing beside it but fine gold jewellery and a long evening.
What she said after wearing it
The bodice is the thing. Deep, dense velvet that moulds to the ribs and stays put through dinner, dancing and a very long taxi queue. The cobalt darkens in low light to something almost like midnight. Pure drama, no effort.
Wore it to a black-tie fundraiser in December and floated. That tulle skirt has so much volume it practically announces you, yet weighs nothing on the hips.
Genuinely lovely. The velvet bodice is sumptuous and that galaxy-tulle skirt is a proper spectacle. My only quiet wish, and it's entirely about my own height, is that it sat a touch shorter so I could skip the heels. With them on it's perfect, so really I'm splitting hairs about something that's just me.
I almost overlooked the sheer bubble sleeves but they're the whole story. They sit softly off the upper arm and catch the candlelight when you lift a glass. Romantic without being fussy, and they cover just enough.
What I love is how it stops short of costume. The skirt is enormous and starry but the colour is so deep and quiet that it reads grown-up. A real ballgown for a real woman, not a fancy-dress moment.
This is on me entirely. The gown is beautifully made, the velvet rich and the tulle skirt every bit as dramatic as I'd hoped. But once I saw the cobalt by my own window, in proper morning light, I realised a deep navy or black would suit my colouring better. A taste thing, nothing more. The piece itself is faultless and I can see exactly why people love it.
Thank you for such a fair and thoughtful note. Colour is so personal, and seeing a shade settle in your own daylight is the truest test there is. We're glad the velvet and the tulle lived up to the Petronia's promise, even if this particular cobalt wasn't quite your match. If you'd ever like guidance on tone or fit for a future piece, do write to us at contact@hctbeauty.com, we'd be glad to help you find the one that feels unmistakably yours.
Photographed it by a window the morning after the wedding and the blue does this shifting thing, ink in shadow, sapphire where the light hits. Gorgeous on camera and even better in the room.
Six hours, three courses, a ceilidh. The velvet didn't crush at the waist and the tulle sprang back every time I sat. Construction you can feel.
No complaint at all about the dress, which is extraordinary, the bodice is plush and the skirt is pure occasion. The hold-up was the final stretch of the journey: a national day off here meant the depot sat idle for a stretch and the parcel simply waited it out before the courier could move again. Frustrating timing with an event approaching, though it did arrive intact and as beautiful as promised. The waiting is the only reason I've marked it down.
We completely understand the worry of watching a parcel pause when a date is looming, and we're sorry the closure stretched your wait. The Petronia deserved a calmer arrival than that. Delivery timing around regional holidays isn't always in our hands, but we'd genuinely like to help you plan around them next time, so a gown like this lands with room to spare. Please reach us at contact@hctbeauty.com and we'll keep an eye on any future order for you. We're so pleased it reached you whole and as lovely as you'd hoped.
The skirt moves like weather. Walking, it billows a half-second behind you; spinning, it lifts into a full cloud. I kept finding excuses to cross the room.
Bought for a milestone anniversary dinner at a very old hotel and it matched the chandeliers. The deep velvet top against all that airy tulle is such a clever contrast.
I'll be honest, the fault here is mine. I ordered the size I always take without checking, and through the structured velvet bodice it came up snug across the back, so I should have gone one up. The gown itself is genuinely beautiful, the tulle skirt is a marvel and the colour is deep and gorgeous. I'm just gutted I rushed the size and couldn't wear it on the night.
Please don't be too hard on yourself, a fitted velvet bodice asks a little more of the measurements than a soft fabric would, and that's exactly what our size guidance and our team are here for. We'd hate for the Petronia to stay in its box. Do get in touch at contact@hctbeauty.com and we'll sort an exchange for the size that lets that skirt do its thing properly. We're confident it'll be worth the small detour to get you into it for the next grand evening.
You'd assume a skirt this size would be a chore. It isn't. The bodice is structured but soft against the skin, nothing dug in, and I could actually breathe through pudding.
I've hired gowns that cost nearly this for one night. To own something with this much presence for under four hundred, in fabric this good, feels almost cheeky.
Where the velvet meets the tulle there's this neat seam that nips you in and then explodes outward. Tiny waist, vast skirt, the most flattering proportion I've worn.
Not loud, not sparkly, just enormous and deep-blue and a bit magic. People kept asking to touch the velvet.
A gown that does the work for you. Stepped into it, zipped up, and suddenly the evening felt like an occasion worth dressing for.
I'm self-conscious about my upper arms and the bubble sleeves were the answer. Sheer enough to feel like evening, present enough that I forgot about them entirely and just enjoyed myself.
Layers and layers of fine tulle that genuinely look like a night sky when you move. My niece called it the galaxy dress and she isn't wrong.
Took it to a hundredth-birthday ball, the kind with a string quartet. Stood out for all the right reasons and felt completely at home in a very grand room.
Turned it inside out to check, as I always do at this price. Clean seams, a proper lining under the bodice, the tulle layers neatly tacked. Nothing rushed. Reassuring.
Such a rich, saturated cobalt. Against pale skin it's striking and against my olive tone it's just as good. A colour that flatters far more women than black does, honestly.
Threw it on for a New Year do half-expecting a faff. Zipped in seconds, danced till one, no adjusting all night. A showstopper that behaves itself.
This is the third thing I've ordered from the atelier and the one I reach for when an evening truly matters. The velvet-and-tulle combination is unlike anything else I own.
Answered by the Hugo Caesar Tassi atelier
It's fully lined and completely opaque — no slip required. Only the lightest details are very slightly sheer, by design.
True to size through the waist and skirt. The bodice is tailored, so size up if you're fuller in the bust. See the size guide for exact measurements.
Very much so — it was designed for evening, dinners and the after-dark hours. Cobalto and the deeper tones read beautifully after dark; the lighter colors suit daytime.
Pieces that share the Cobalto palette and the house line
