(Inspiration) This is a fun wedding cake design! 4 tiers, 2 simple with fondant bows and 2 tiers absolutely covered in a rainbow of sprinkles! We've also done something similar before - great for a modern wedding theme.
Rainbow Sprinkles Wedding Cake - Small wedding cake made for a wedding with a rainbow theme. Bottom tier and initial C are both completely coated in rainbow non-pareils. I thought this turned out so super fun and pretty at the same time.