The Elizabeth and James Spring 2010 lookbook promises many wonderful things to us this upcoming season. While plaids and androgyny still seem to play a big part in the Olsen twin's fashion tastes, you are seeing a much less tailored and a much more laid-back style.

Some of the men in the lookbook have long, unkept locks and many have carelessly rolled-up pants. Women have more loosely fitting options rather than the form-fitting ones we have seen from the twins' in the past.

Have a browse through the above gallery to get a look and the Elizabeth and James Spring 2010 lookbook and a taste of the Olsens' ever-evolving style.