Hermès Constance Size Guide: 18 vs 24
Two sizes, two genuinely different use cases — evening statement versus everyday workhorse.
The Constance's sizing decision is simpler than most Hermès bags — with only two primary sizes in regular rotation, the choice largely comes down to a single question: are you buying an evening statement piece, or a bag you'll genuinely wear several times a week?
This guide breaks down the Constance 18cm and 24cm individually, explains how the bag's flat crossbody fit interacts with body type, and helps you decide which size actually fits your lifestyle.
Constance 18: The Evening Piece
The Constance 18 is compact and elegant, best suited to evening occasions or carrying only the most essential items. Its smaller interior genuinely limits daily practicality, but its scale makes the bag's signature H-clasp appear proportionally larger and more striking against the body.
Constance 24: The Everyday Choice
The Constance 24 offers meaningfully more capacity, comfortably fitting daily essentials like a wallet, phone and small pouch. It's the size most frequently recommended for buyers who want to wear their Constance regularly rather than reserve it for special occasions, striking a better balance between the bag's architectural silhouette and genuine usability.
With the Constance, size isn't just about capacity — it's about how often you'll actually reach for it.
How Body Type Affects Fit
Because the Constance sits flat against the body when worn crossbody, its fit varies more noticeably by frame than most other Hermès silhouettes. The 18cm tends to suit petite frames particularly well, sitting proportionally in scale, while the 24cm offers more universally balanced proportions across a wider range of body types.
Try both crossbody before deciding
Because the Constance's fit is so body-dependent, trying both sizes crossbody in a boutique setting is especially worthwhile before committing, more so than with most other Hermès silhouettes.
Which Size Should You Choose?
- Want a striking evening piece and don't need daily capacity — choose 18cm
- Want to wear your Constance several times a week — choose 24cm
- Have a petite frame and prioritise proportional scale — the 18cm may suit better
- Unsure which to choose — the 24cm's broader practicality makes it the safer default
Size Comparison
| Size | Best For | Capacity |
|---|---|---|
| 18cm | Evening / occasion carry | Small |
| 24cm | Everyday practical use | Medium |
24cm for Versatility, 18cm for Statement
Most buyers will get more genuine wear out of the 24cm, which balances the Constance's architectural identity with real daily usability. The 18cm remains a compelling choice specifically for buyers who want an evening-focused statement piece rather than an everyday bag.
If you can only own one Constance, the 24cm will earn its place in rotation far more often.
Continue Exploring Size and Lifestyle Guide
See how the Kelly's four sizes compare to the Constance's simpler two-size lineup.
🔥 Most SearchedThe full silhouette comparison behind these two structured icons.
◆ Model GuideThe full history, leather and hardware guide for the Constance.
◆ Size GuideCompare the Constance's structured sizing logic to the softer Picotin.
Frequently Asked Questions
The Constance 18 is a compact, evening-oriented size, while the 24 offers meaningfully more interior capacity, making it the more practical choice for genuine daily use.
The 24cm is generally considered the more popular, practical size for buyers who want to wear their Constance regularly rather than reserve it for special occasions.
For most buyers, yes — the 18cm's compact interior is better suited to evening essentials than a full daily-carry routine.
Yes, because the Constance sits flat against the body, the 18cm tends to suit petite frames especially well, while the 24cm offers more universally balanced proportions.
