Nicky & Kathy Hilton’s Mother’s Day Jewelry Collab Has Gifts for the Chic Mom

When Nicky Hilton named her jewelry brand Theo Grace after her daughters Lily-Grace, 9, and Theodora, 8, she encoded the brand's operating principle into its identity: fine jewelry as a record of the people who matter most. The Made to Treasure collection, which launched April 6 in collaboration with Kathy Hilton, pushed that philosophy further, delivering six customizable styles across necklaces, bracelets, brooches, and a pin, all designed to carry the weight of a specific relationship.

The lineup is available in gold and silver plating, with or without diamond accents, starting at $65. The standout is an oval photo locket with an optional 0.10 carat diamond accent, offered in both metal finishes. Unlike traditional lockets that require customers to trim photos by hand, Theo Grace handles the sizing and printing in-house. "I love lockets. To me, they're just so nostalgic," Nicky shared. "We size it, upload it. It is so easy." The practicality is calculated: the locket category stalls on exactly this friction point, and removing it positions Theo Grace as a jewelry service, not just an object.

The monogram brooch, designed for blazers, coats, or occasionwear, pairs a bow motif with a subtle diamond accent and a personalizable initial charm. The initial cube bracelet accommodates up to eight beaded characters, with the option to swap any letter bead for a diamond. Taken together, the six-piece collection reads less like a single aesthetic statement and more like a modular system for sentimental jewelry.

Kathy, who co-designed the collection alongside her daughter, framed the work through grandmotherhood. "Watching them grow," she said of her grandchildren, "you better enjoy every second of it." The sentiment grounds what could otherwise feel like a commercial exercise: a mother designing jewelry for mothers, alongside her own mother, to be given between mothers.

"This Mother's Day collection is very close to my heart — not just as a mom myself, but for my mom, the moms in my life and the many mothers, grandmothers and caretakers who mean so much to so many," Nicky told OK!. "When designing the collection, we really wanted to create pieces that felt thoughtful, timeless and easy to gift. She's taught me so much about style, motherhood and life, so this is a moment I will treasure forever."

The collection's architecture, a base piece with an optional accent stone in gold or silver, maps cleanly onto how personalized gem jewelry actually gets given: as a meaningful upgrade to something already intimate. At $65 to $140 before customization, the entry point is low enough to make a diamond-accented locket feel like a considered choice rather than an extravagance, and the modular logic opens the door to birthstone substitutions down the line, a natural next step for a brand built on making jewelry feel irreplaceable.