Chloe Sterling

How to buy second hand designer bags with a specialist's eye: condition grades, where wear hides, what codes can and cannot tell you, and the questions to ask before you pay.

The Birkin 25, 30, 35 and 40 side by side: dimensions in cm and inches, what each one really holds, and how leather and construction change the size you should choose.

Every Kelly size from the Mini to the 40, with dimensions in cm and inches, what each one holds, and why a Kelly carries less than a Birkin of the same number.

All five Lady Dior sizes side by side, from the Micro to the Large: dimensions in cm and inches, what each one holds, and what to check on a vintage piece.

The Loulou comes in four main sizes and one very different Puffer. Here is how they compare, what each one holds and why the small is the size most people choose.

Every Speedy size from the Nano to the Speedy 40, with dimensions in centimetres and inches, what fits inside, who each one suits, and how the Bandoulière changes things.

The Lindy Mini, 26, 30 and 34 side by side: dimensions in cm and inches, what each really holds, how the Lindy carries, and what to check on a pre-owned piece.

Most handbags lose value the day they leave the boutique. A few classics do not. Here is what the resale market rewards, model by model, and how to buy with it in mind.

Totes win on capacity, top handles on polish and resale. Here is how to choose between them by the way you actually live, carry and commute.