Louis Vuitton uses acronyms to size many of their bags. This guide will explain what BB, PM, MM, and GM stand for.

What Does BB, PM, MM, and GM Mean?

Louis Vuitton typically creates several sizes of the same style bag. The acronyms you see behind a name indicate the size of the bag (i.e. Neverfull PM = Small, Neverfull MM = Medium, Neverfull GM = Large). Unfortunately, not all Louis Vuitton bags are made in all four sizes. For example, the Alma comes in all four sizes (BB, PM, MM, GM), but the Trevi only comes in two (PM and GM).

BB: The smallest, mini bag size

We aren’t actually certain what BB actually stands for, but since it usually refers to a mini sized bag, we are guessing it stands for “baby bandouliere” (which means baby shoulder bag).

Most popular Louis Vuitton BB bags: Alma BB,  Pallas BB,  Capucines BB, Montaigne BB

PM: Petit Model or “small model” in French

Most popular Louis Vuitton PM bags: Alma PM,  Galliera PM,  Trevi PM,   Totally PM

MM: Moyen Modèle, or Medium Model, for a medium/large sized bag

Most popular Louis Vuitton MM bags: Neverfull MM,  Artsy MM,  Brea MM,  Sully MM

GM: Grande Model, the largest size

Most popular Louis Vuitton GM bags: Neverfull GM,  Tivoli GM,  Delightful GM

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Louis Vuitton Bag Size Chart

Using the Louis Vuitton Alma as an example, you can see the differences between the BB, PM, MM, and GM.

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