Leather jackets are fantastic, but tricky to buy. Leather has its own unique heat retention, cleaning and style considerations. Before winter arrives, it's worth covering the basics.
As The Art of Manliness points out, leather jackets are very durable, but this also makes them difficult to modify. When buying a leather jacket, it's best to start with how it fits and work your way up from there:
Leather can't be adjusted (inexpensively), so you'll need to buy the right shape from the get-go. You want enough looseness that it doesn't pinch at any angle, and not much more than that. Leather's too stiff to drape, so an oversized jacket bulges and flares in odd, unattractive ways.
Leather jackets also aren't a great fit for formal wear, nor do long, flowing coats look terribly attractive (contrary to what movies would have you believe). If you've never given much consideration to the types of leather jackets you buy, check out the source link for a thorough rundown.
While the site offers a lot of information that's relevant to everyone (leather is leather is leather), the style guide is geared more towards men. This guide from eBay offers advice for women.
How to Wear a Leather Jacket With Style [The Art of Manliness]