I have bought a few actual maternity purchases. A pair of black work pants, a pair of jeans and two enormous bras. The black work pants are slightly too big and I keep telling myself that soon my bump will have expanded enough to keep them from sliding down so much. The jeans aren't bad except that they are flare-ish and I haven't worn flared jeans in years. The bras, oh the bras are a necessary evil.
With the very limited selections of maternity clothing that I actually like I find myself wearing a lot of leggings and yoga pants, maxi dresses and skirts, and so far my normal shirts are doing the job, albeit increasingly short. I hope that I can make my current wardrobe last through the next few months. Elastic waist bands are my friend.
I did find a few maternity clothes that I will be adding to the wardrobe. ASOS is kind of the only place that I could find that doesn't want pregnant women to look like they hate fashion.