All Custom Cakes Must Be Ordered At Least 24 Hours In Advance. Serene and classy, the Quiet Teen sweet sixteen cake is attractively styled with white fondant and embellished with flowers and grapes. Set upon a round sweet sixteen cake stand, it provides an elegant appearance that is perfect for any celebratory event. A Las Vegas bakery creation, this is one of the prettiest sweet sixteen cake designs despite its simplicity.