Introducing Natalie Hartley, Senior Fashion Editor at InStyle magazine and editor of her own blog, NatalieHartleyWears. As the final editor in our London Fashion Week Guest Editor series, Natalie talks us through her favourite AW12 Reiss pieces and will be reporting live from fashion week all day today.

Ballie leather jacket. It's all about oversized jackets this winter and I love that a leather biker jacket can be seen slightly more feminine.

Cate jumper. I would always opt for grey to wear with my jeans or a leather pencil skirt. This is a great easy to wear jumper in a big size.

Bidston skirt. Pencil skirts are a favourite skirt style for me and I love the zip details that toughen this skirt up.

Elle bag. I love how leather smartens up this style of bag.

(previous Guest Editor, Gala Gonzalez, also loves this bag).

Kristina boots. It's all about the colour palette of these boots, as it's nice to see a soft colour on heavy winter boots and the ankle length is perfect for toughing up skirts and trousers.

Natalie is taking over Reiss social today and will be tweeting @Reiss as well as posting Instagram pictures @Reissfashion, and stay tuned to the blog to read her round-up of the final day of fashion week.