Fashion accessories and lingerie make perfect stocking fillers. You can get some really cute gift sets and its the perfect way to compliment a main present. Gloves and socks are always good for the winter months as she might not think to buy them for herself. Also, if she is a frequent flyer then cosy cashmere socks (£19) are an ideal inflight companion!
There is a lot of leopard print around at the moment. You can get a cute pair of pumps for under £20, I like the pink trim on this pair from Dorothy Perkins (£18). Rose scented drawer liners (£11.99) may seem like a gift solely for older ladies but they can actually make a big difference to your clothes, I like the retro feel on these ones. See below for more stocking filler ideas.