Saint Laurent Bag: Kate, Loulou, Niki, or Sac de Jour, Which to Choose Secondhand?

Saint Laurent Bag: Kate, Loulou, Niki, or Sac de Jour — Which to Choose?

Four models account for most of the demand for pre-owned Saint Laurent bags: the Kate, the Loulou, the Niki, and the Sac de Jour. They share the same house, the same YSL monogram — but not the same use, not the same character, and not the same buyer profile. Here’s how to distinguish them and find the one that suits you best.

The Kate — Evening Sophistication

Introduced in 2012, the Kate is the most "event-oriented" of the four. Its compact size, structured flap closed with the Cassandre monogram, and gold chain make it a piece designed for evening — or for women who only need the essentials daily (phone, card, lipstick, keys).

Its Visual Identity

The Kate is immediately recognizable by its metallic tassel hanging on the side of the flap — a detail that has become its signature, which some love and others remove. It comes in several sizes: Small (20cm), Medium (25cm), and Large (32cm), but the Medium accounts for the majority of pre-owned purchases.

For Whom?

The Kate is for you if you're looking for an evening or special occasion bag, if you carry few items, or if you want your first YSL bag at an entry price (Medium versions are easily found between €800 and €1,300 pre-owned, depending on condition and leather).

The Loulou — Chic and Timeless Everyday

Launched in spring 2017 by Anthony Vaccarello, the Loulou is a direct tribute to Loulou de la Falaise — stylist, jewelry designer, and Yves Saint Laurent's muse for over 30 years, who passed away in 2011. Its chevron-quilted leather forming a discreet Y, its leather-braided chain, and its magnetic YSL plate clasp make it the house's absolute commercial reference today.

Its Visual Identity

Where the Kate is structured and formal, the Loulou is soft and relaxed. Its slightly boxy shape, chevron quilting, and metal YSL logo on the flap are instantly recognizable — but never flashy.

For Whom?

The Loulou is the most versatile choice of the four — it goes from office to dinner effortlessly, in Small for a more streamlined look or in Medium for everyday use. Pre-owned, the Medium in black grain de poudre leather is the most liquid version for resale, between €1,100 and €1,700 depending on condition.

The Niki — Asserted Vintage Character

Arriving in 2018, the Niki is the most "rock" of Saint Laurent bags. Its wrinkled and aged leather, braided chain, and flexible two-compartment shape give it a deliberately worn, relaxed, almost retro look — the opposite of the graphic rigor of the Sac de Jour or the Kate.

Its Visual Identity

The Niki is recognizable by its crinkled leather (naturally wrinkled), which has the advantage of hiding everyday micro-scratches better than any other YSL model. It's the Saint Laurent bag that ages best with use.

For Whom?

The Niki is for those who want character and a relaxed vibe, without sacrificing quality. Its aged leather is actually an asset in the pre-owned market: a pre-worn piece retains the exact same appearance as a new piece, making an occasional purchase particularly smart. Between €1,200 and €1,800 for a Medium, depending on condition.

The Sac de Jour — The Professional Reference

Created in 2013 by Hedi Slimane, the Sac de Jour ("bag of the day") is the most structured and sober of the four. Architectural lines, accordion sides, Y-shaped stitching in homage to the founder's initials — it's a work bag designed to last and never go out of style.

Its Visual Identity

Discreet, with no visible logo on the front (other than the hardware), the Sac de Jour embodies silent luxury: the quality of the leather and the rigor of its construction speak louder than the monogram. It comes in sizes from Nano (13cm, ideal as an evening clutch) to Large (38cm, office size).

For Whom?

The Sac de Jour is for women who prefer a timeless and versatile bag to an identifiable "it-bag." Its Nano remains one of the best-valued pieces in resale across the entire range — between €1,100 and €1,600 pre-owned, compared to over €2,000 in-store.

Quick Comparison: Which One Suits You?

What to Check Before Buying Pre-owned

For a vintage Saint Laurent bag, the priority inspection points are:

• The chain: On the Loulou and Niki, check that the braided leather of the chain is not frayed or detached at the ends — this is the area that wears out first.
• The flap and stitching: On the Kate, check the alignment of the Cassandre monogram and the condition of the tassel (easily replaceable but sometimes missing).
• The lining: On the Sac de Jour, the interior leather lining can detach over time — check along the interior edge stitching.
• The hardware: Gold finishes can oxidize on pieces older than 5 years — a slight patina is normal, but black or chipped areas should be noted when negotiating the price.

Every Saint Laurent bag offered by RARR Vintage is authenticated and inspected on these points before being listed online, with a detailed condition grade.