It's a simple cotton tunic over a simple khaki skirt both from JJill and tunic available here and here though skirt seems to be sold out. (whenthegirlsrule.com)
One, because I had been looking for a neutral khaki skirt. (polishedwhimsy.com)
I do have a pair of very light khaki slacks, and a light khaki skirt, so that's my version of white. (40plusstyle.com)