The YSL Loulou comes in four main sizes, Toy, Small, Medium and Large, priced from about $1,950 to $3,590 USD at retail in 2026. It is named after Loulou de la Falaise, quilted in the house's Y pattern, and the Medium is the size our team resells most often.
What is the YSL Loulou?
Anthony Vaccarello introduced the Loulou in 2017 as a soft everyday shoulder bag with the interlaced YSL Cassandre clasp, a leather-lined chain strap and signature Y quilting. Wear it long and crossbody, or double the chain for a shorter shoulder drop.
The name honors Loulou de la Falaise, Yves Saint Laurent's longtime muse. The silhouette has stayed in the permanent collection while seasonal colors rotate through each year, which is why it keeps showing up on best-of lists.
Two practical details: the chain is woven with leather where it meets the shoulder, and the flap closes on a hidden magnet behind the YSL clasp, so it opens smoothly with one hand.
Loulou sizes compared
All four sizes share the same quilting, clasp and strap system, so the choice comes down to what you carry. Dimensions below are approximate.
| Size | Approx. dimensions | What fits | Best for |
|---|---|---|---|
| Toy | 20 x 15 x 7 cm, 7.9 x 5.9 x 2.8 in | Phone, card case, keys, lipstick | Evenings, errands, light days |
| Small | 25 x 18 x 9 cm, 9.8 x 7.1 x 3.5 in | Phone, compact wallet, keys, lip balm | Daily carry, dinners |
| Medium | 30 x 22 x 11 cm, 11.8 x 8.7 x 4.3 in | Full-size wallet, phone, sunglasses case, small notebook | Work to weekend |
| Large | 35 x 25 x 12 cm, 13.8 x 9.8 x 4.7 in | An 11 inch tablet or small laptop, plus daily essentials | Commuting, travel, work bags |
Small and Medium account for most of what sells. If you carry a laptop, the Large is the only realistic option in the line.
Leathers and finishes
- Matelasse lambskin: the signature. Soft, matte sheen, takes color beautifully, and it shows scratches and corner rub quickly.
- Grained calfskin: offered in some seasons and more forgiving for daily wear, with a slightly stiffer drape.
- Y-quilt versus chevron: the classic Y quilting is the safe, recognizable choice; chevron versions arrive in limited runs and hold a slight resale premium because fewer were made.
- Loulou Puffer: a separate padded line with pillow-like quilting and the same clasp, sold in Toy through Medium. It reads more casual than the classic Loulou.
| Finish | Scratch resistance | How it ages |
|---|---|---|
| Matelasse lambskin | Low | Develops a soft sheen; light marks blend in |
| Grained calfskin | High | Holds shape and hides daily wear |
| Puffer lambskin | Low to medium | Puffs can flatten slightly with heavy use |
If lambskin worry is your hesitation, buy pre-owned. A gently used Loulou removes the first-scratch anxiety and costs meaningfully less than the boutique.
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Saint Laurent Medium Calfskin Loulou
Cond: Condition: Very Good
Loulou prices in 2026
| Size | Boutique (USD) | Pre-owned range (USD) |
|---|---|---|
| Toy | $1,950 | $1,100-$1,500 |
| Small | $2,690 | $1,400-$1,900 |
| Medium | $3,150 | $1,700-$2,200 |
| Large | $3,590 | $1,900-$2,500 |
(Prices verified October 2026)
Clean, recent pieces in black with gold hardware sit at the top of the pre-owned column. Seasonal colors and heavy wear fall 10 to 20 percent below these ranges.
Loulou versus other YSL shoulder bags
Three YSL styles come up most often on our counter, and the differences are simple.
| Style | Shape | Closure | Feel |
|---|---|---|---|
| Loulou | Soft matelasse with Y quilting | Cassandre clasp over a flap | Pillowy, casual luxury |
| Envelope | Structured with chevron quilting | Cassandre clasp | Sharp and dressier |
| Kate | Slim evening silhouette | Tassel with YSL monogram | Formal, minimal capacity |
If you want one YSL that works from coffee to dinner, the Loulou is the most flexible of the three. The Envelope suits structured outfits, and the Kate is an evening-only bag.
Does the Loulou hold value?
Moderately. Well-kept Loulous resell for roughly 50 to 65 percent of retail, which trails Chanel and Hermes but beats most contemporary designs. Black or beige with gold hardware in Small and Medium recover the most, and the Loulou is one of our picks among designer handbags that stand the test of time.
Buying pre-owned at $1,700 to $2,200 for a Medium means the steepest depreciation is already behind the bag. Compare like for like and check the details below before you commit.
How to carry it
Think about how you will actually wear it before choosing a size. The chain sits around mid-hip crossbody on most frames and folds up to a shoulder drop when doubled, and the size changes that math: the Large hangs lower, the Toy sits high, and the Small and Medium hit the sweet spot for most people.
Pre-owned checklist
- Quilting: full puffs with no flattening along the flap edge.
- Corners: light rub is normal; deep gouges and color loss are not.
- Clasp: surface scratches are fine; check that the Cassandre clasp aligns and closes with a confident click.
- Chain: leather threading intact, with no fraying or stretching at the grommets.
- Interior: check for ink marks, fading and stretched card slots if present.
- Provenance: Saint Laurent details change by season, so buy from a seller who authenticates hardware, labels and stitching in-house. Browse our Saint Laurent Loulou collection to see vetted examples.
Frequently asked questions
What sizes does the Loulou come in?
The main line comes in Toy, Small, Medium and Large, from about 20 cm to 35 cm wide. The Puffer is a separate padded version that runs Toy through Medium. Small and Medium are the most popular on the resale market.
Is Loulou lambskin delicate?
Yes, it is softer and more scratch-prone than grained leather, and corners show wear first. The matte finish ages gracefully, and light marks can be conditioned. Storing the bag stuffed in its dust bag and rotating it with others makes the biggest difference.
Does the YSL Loulou hold value?
It holds moderate value, typically 50 to 65 percent of retail for clean pieces. Black with gold hardware and classic Y quilting resell best. Buying pre-owned avoids the sharpest part of the depreciation.
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