A small village rarely gets a shop that does nothing but prom, homecoming and formal gowns. Sanford has one. Three Diamonds Prom & Formal runs out of its own space on Saginaw Road, apart from the family's bridal salon down the same road, and the separation shows in how it works. Nobody shopping for a junior prom gown is waiting behind a wedding party, and the staff on the floor spend their whole season on high school dances.
The shop sums up its aim on its prom page, and the line fits the name on the door.
At Three Diamonds Prom & Formal, we don’t just want you to find a dress. We want you to find the one that makes you feel like a diamond.
The prom side specializes in prom, homecoming and formalwear, with a range of styles, sizes, colors and price points meant to give every girl a real choice. The goal, as the store frames it, is a gown that makes her feel like the best version of herself, whether that is something timeless, something bold, or something fun and flirty for a fall homecoming.
Who runs the prom shop
Heidi Merillat runs the prom location. Her staff bio describes a long love of fashion and a belief that clothing can build confidence and serve as self-expression. It also explains why she prefers this end of the business: she connects with younger girls, and she knows high school can be a hard stretch, so she wants big events like prom and homecoming to turn into good memories. That outlook sets the tone for a first-time formal shopper who has no idea where to start, and for the senior who has done this three times already.
The business is a family one. Owner Hannah Merillat was born and raised in Sanford and came up through the bridal industry as a consultant before opening her own shop. Her mother, Anna Merillat, owns several businesses in the Sanford and Midland area and works alongside her daughter. Heidi shares the family name, though the staff bios do not spell out how she is related. Either way, the split is clear. The wedding side gets its own building and its own appointments; the prom side is where Heidi and the dance season live.
Designers on the prom floor
The prom page names six designers. Five of them have pages on this site.
- Ellie Wilde
- Trendy two-piece looks alongside long, elegant prom styles.
- Primavera Couture
- Bead and sequin work, with each dress hand sewn, covering long evening gowns and shorter cocktail lengths.
- Faviana
- A New York label with clean lines and a size range of 00 through 24W.
- Dave & Johnny
- Popular prom gowns described as sophisticated, glamorous and fun.
- Alyce Paris
- An established prom name dating to 1967, with sizes listed from 000 to 32.
- Lucci Lu
- A special occasion line built around handcrafted, feminine silhouettes.
That mix spans a wide range of price and style for a village shop. Students from Meridian Early College High School in Sanford are the closest customers, but the prom store also draws from Midland High, H. H. Dow High and Bullock Creek in and around Midland, and from Coleman, Beaverton and Gladwin to the north. For those families, a dedicated prom room in Sanford sits right on the way rather than at the end of a long drive into a bigger city. More stores across mid-Michigan are listed on this site's state page.
One planning point: Three Diamonds does not do alterations in-house. The FAQ says the shop refers customers to local seamstresses it has worked with for years, and those seamstresses set their own pricing. Build that step into the calendar after you buy, especially when the gown needs a hem for prom heels.
Three Diamonds Prom & Formal: what to know first
Can I just stop in to shop for prom?
No. Three Diamonds is by appointment only for every kind of shopping and keeps no regular walk-in hours, so request a time through the site's appointment form, by phone or by email before you go.
Does the shop hem prom dresses?
Not in-house. It recommends trusted local seamstresses, who handle the work and pricing themselves.