A "pearl brooch" refers to a piece of jewelry that is made up of pearls and is typically worn as an accessory on clothing, such as a shirt or a dress. Full definition
acrylic jewelry Akoya pearl beads Akoya Pearl Bracelets Akoya pearl brooches Akoya pearl earrings (goodbyehousehellohome.com)
For extra spice you can add a long pearl brooch right on the front so that is will be visible. (outfittrends.com)
Style 8862, ball gown wedding dress created from layers of soft organza with a ruched bodice featuring a sweetheart neckline with Swarovski crystal and pearl brooch accent, Allure Bridals (brides.com)