Shauna Lynn August 1, 2012 Staging Tip #22 - The Rule of 3's #homestaging #realestate #decorating Shauna Lynn August 1, 2012 The Rule of 3’s – in decorator’s terms, grouping items in “3’s” tends to be visually appealing and can help to avoid over-decorating. Not all shelves/mantels etc need as many of 3 items, but remember to stop once you place that third piece.