I thought I would do my interpretation of that cake in a single tier, so I made a four-layer, french vanilla cake with red raspberry filling. I mixed a (too dark) shade of ivory buttercream and two shades of purple, some brown for stems and green for leaves. I wasn't sure how to actually make the flowers, so I experimented with a few tips and ended up with something completely different!
I don't think they are actually lilacs. Some people thought they were wisteria and others thought they were hydrangeas. (My kids thought they were grapes). But everyone thought the cake was beautiful and tasted great. In fact, it was pretty much devoured in one sitting.
All in all, I enjoyed my birthday celebration with family and friends. And I got the birthday cake I wanted because I baked it myself!