These alternating balusters were copied from the stairway in a home featured in the movies. The movie was "Stepmom" -a movie I never took the time to see. My customer directed me to the blog, "Hooked on Houses" to see the images posted below.  So I studied the photo image and did the best I could.  I think they came out fine.  One of the characteristics of these is that the bases intentionally do not match - a nice touch on the part of the designer, I think. 
Yes, that is Julia Roberts walking down the stairway.