Paper Bakery

I'm loving this faux wedding cake from the Paper Source blog.  I cannot wait to choose the perfect colors and fabrics and put everything together for my future sister-in-law's bridal shower in a few months.

I'm thinking fewer pom-poms and maybe some handmade crepe paper flowers on the top. And the more I look at this, the more I realize that it can double as an envelope holder at the actual wedding if a slot is cut into the top.  What colors and fabrics would you use?