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This royal Sweet 16 collection gives you six coordinated designs for planning a princess-themed milestone set. Your motif mix includes a birthday crown, storybook castle, high heel, ball gown, “Sweet 16” lettering, and a numbered hand mirror. Blush pink and violet repeat across the designs, while warm gold details connect the castle openings, gown, shoe platform, and mirror frame. The tall crown and castle give your arrangement strong anchor shapes, and the rounded mirror and lettering add contrast without losing the royal theme. You can personalize the crown message, shift the palette to the birthday honoree's favorite colors, or carry the age onto another design while keeping the crown, castle, and formal-fashion cues. Before decorating, you can use FlowlyBoard's visual planning workspace to compare colorways and balance the larger statement pieces with the smaller accessories.