La Petite Robe Noire vs Mon Guerlain
Side by side. Scored honestly.
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Side by side
Comparing the originals — price, breadth, listed-note depth.
Opens with a tart, almost boozy sour cherry that softens quickly as almond and red berries pull it toward jam territory. The rose heart keeps it grounded — this isn't gourmand-only; the floral gives it structure and stops the sweetness from cloying. By dry-down, vanilla and tonka bean round everything into a warm, skin-close base with patchouli adding just enough earthiness to give it depth. Projection is moderate and intimate rather than loud; the sillage lingers softly without announcing itself across a room — Best in cool weather, for evenings when you want to smell deliberately pretty rather than neutral.
Lavender leads the opening with soft bergamot lift — clean but not sharp, more French soap than aromatic herb. The heart settles into a quiet floral blur of iris and jasmine, neither dominant, both smoothing lavender into something powdery and skin-close. The dry-down is where it earns its keep: coumarin and vanilla fold over a warm sandalwood base, turning subtly gourmand without going edible. Projection stays moderate, sillage is intimate — a fragrance that follows rather than announces. — Spring and fall casual wear for someone who wants comfort over complexity.
How they overlap
La Petite Robe Noire and Mon Guerlain share 2 notes (bergamot, vanilla). The same note name doesn't always mean the same scent — different houses use different vanillas, different woods, different musks — but a multi-note shared spine usually does indicate genuinely-comparable wear character. The remaining notes (6 unique to La Petite Robe Noire, 5 unique to Mon Guerlain) are where the divergence happens.
The buying decision
La Petite Robe Noire is the cheaper original at $110 compared to $120 for Mon Guerlain — about 8% less. La Petite Robe Noire is built for spring/fall/winter; Mon Guerlain for spring/summer/fall. Pick by when you'd actually wear it.