looking to make a sparkly pink & white zebra cake (white buttercream with sparkly pink zebra stripes) - any suggestions on making the stripes out of buttercream instead of fondant? Wondering if a stencil wold work or if you have other suggestions.

Thanks in advance.

Yes, you can use wax paper as a stencil.  I did this cake out of buttercream using wax paper as a stencil.  I based how I did it off this tutorial.  http://sweetnessandbite.com/2013/10/perfect-buttercream-stripes-part-two/