Start with what you actually carry on a typical day and the main occasions you are buying for, then choose the size that matches. If you carry little and want a bag that finishes an outfit or suits evenings, a mini or clutch is right. For most everyday needs -- purse, phone, keys, make-up and a few extras -- a medium bag such as a shoulder bag or camera bag is the versatile sweet spot and the smartest single bag to own. If you need to carry a laptop, folder, water bottle or a child's bits, step up to a large bag or tote. A good approach is to build a small set over time: a medium everyday bag first, then a large tote for carry-everything days and a small clutch for occasions. That trio covers almost every situation. Also factor in your frame, since the same bag reads differently on different heights and builds.

For everyday use, a medium bag is almost always the best choice. It is big enough to hold the things most people carry daily -- a purse, phone, keys, make-up and a few extras -- while staying neat and comfortable on the body, unlike a large tote that can feel bulky when it is not full or a mini that forces you to leave things behind. Medium shoulder bags and camera-style crossbodies are the standout everyday shapes: the crossbody adds hands-free security that is ideal for commuting, shopping and travel, while the shoulder bag offers a slightly dressier everyday look. If you are buying your first proper bag or want the one that will get the most use, a medium in a neutral colour and durable material is the safest, most versatile pick. Browse our shoulder bags and camera and crossbody collections for everyday mediums.

The best work bag is smart, roomy enough for your job's essentials, and hard-wearing. Look for a structured tote, shopper or larger shoulder bag that can hold a laptop or tablet, a folder or notebook and your daily bits without bulging or looking untidy. Prioritise a secure closure (a zip or proper clasp) and some internal organisation -- pockets or a divider -- so things do not rattle around, and choose a durable material like a good leather or saffiano that will survive daily commuting. A neutral colour such as black, tan or navy keeps it professional and lets it go with your whole work wardrobe. Avoid anything too casual, too small or too heavily branded for a formal office. Our tote and shopper bags collection is the natural place to start for work-appropriate sizes and shapes.

Evenings and parties call for small, refined bags -- the opposite of your practical daytime carry. A clutch or a chain-strap mini is ideal: it holds just the essentials (phone, cards, keys, lipstick) and is chosen to finish and elevate the outfit rather than to carry much. Smaller sizes read as dressed-up and intentional, while a large bag can look out of place at a formal or festive occasion. Look for richer colours, metallic or patent finishes or subtle embellishment to suit the moment, and consider a chain strap so you can keep your hands free at a party while still looking elegant. Many occasion bags are convertible, with a tuck-away chain, so they double as a small day bag too. Browse our clutch bags collection for evening-appropriate sizes and finishes.

Proportion is the secret to making a bag look intentional rather than awkward, so scale it to your height and build. If you are petite, smaller and medium bags tend to balance your frame best, while a very large tote can overwhelm you and swamp your outfit. If you are taller or curvier, you can carry larger bags comfortably, and a tiny micro bag may look lost or out of proportion. Beyond overall size, pay attention to strap drop -- the distance the bag hangs from the strap -- because it decides where the bag sits on your body, from the waist to the hip; adjustable and convertible straps let you tune this to what flatters and feels comfortable. The best test is simply to try the bag on and look in a mirror: see how it sits, whether it balances your frame and whether the strap length feels right. Our choosing hub weighs fit alongside shape, material and use.