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That Guy's Secret
"That Guy's Secret: Where Modern Style Meets Fine Jewelry"
About Us
That Guy’s Secret is LaSalle, IL’s premier destination for fine jewelry and upscale men’s clothing, proudly serving Peru, Ottawa, Mendota, Streator, Utica, and surrounding areas since 2017. As a locally owned jewelry store and men’s boutique, we specialize in elegant fine jewelry, custom clothing, and private shopping experiences that elevate your personal style.
Browse our carefully curated collection of fine jewelry, featuring standout pieces perfect for engagements, anniversaries, gifts, and everyday luxury. Whether you're after something timeless or trend-forward, That Guy’s Secret brings quality and sophistication to every look.
Our men’s fashion offerings include custom-fit pants and shirts by Stantt, tuxedo and suit rentals, and wardrobe essentials from leading brands like Saxx Underwear, Mission Belts, and the Tasc Performance Line. From dressy to laid-back, we help modern men define their style.
Private shopping is available anytime during business hours, offering you one-on-one attention, expert advice, and a relaxed environment to explore our collections. Whether you're shopping for a special event or looking to completely build your wardrobe from the ground up, we’re here to make it effortless.
For fine jewelry, fashion-forward menswear, and a personalized shopping experience, visit That Guy’s Secret in LaSalle, IL — where your style is our mission.
Areas Served
Batavia, IL | Bloomington, IL | Coal City, IL | DeKalb, IL | Dixon, IL | Dwight, IL | El Paso, IL | Galesburg, IL | Geneva, IL | Kewanee, IL | Ladd, IL | LaSalle, IL | Manlius, IL | Marseilles, IL | Mendota, IL | Morris, IL | Oglesby, IL | Ottawa, IL | Peoria, IL | Peru, IL | Pontiac, IL | Princeton, IL | Rochelle, IL | Sandwich, IL | Sheffield, IL | Spring Valley, IL | St. Charles, IL | Sterling, IL | Streator, IL | Tonica, IL | Utica, IL | Walnut, IL | Wyanet, IL | Yorkville, IL
Our Professional Associations
- Illinois Valley Area Chamber of Commerce
- La Salle Business Association
What We Offer
Our Specialties include:
- Personal Shopping Subscription Boxes
- Custom Fittings
Our Services include:
- Big and Tall
- Custom Fit Shirts and Pants
- EMS, Fire and Police Custom Orders
- Extended Sizes
- Tuxedo Rentals
- Buy and Sell Gold, Silver, and Platinum
- Earrings
- Watches
Our Brands include:
- 7 Diamonds
- Allure Men Tuxedos
- Alternative Shirts
- American Needle
- Banks Journal
- Ben Sherman
- Blue Q Socks
- Callaway
- Cole Hahn Shoes
- Dakota Grizzly
- Enro
- Florsheim Shoes
- FUN Socks
- Fury Bros. Soap
- Henleys
- Hex Bags
- Ike Bihar Tuxedos
- Kenneth Cole Tuxedos
- Knockaround Sunglasses
- Liverpool Pants
- Mavi Jeans
- Michael Kors Tuxedos
- Mission Belt
- People Footwear
- Perry Ellis Pants
- Psycho Bunny
- Retro Brand Graphic T-shirts
- Rip Stop Pants
- Roamers
- Savane Pants
- Saxx Underwear
- Shottbros Sweaters
- Sock It To Me
- St. James of London Cologne
- Stantt
- Taclite Pants
- Tallia Orange
- Tasc Performance Line
- The Ridge Wallets
Our Products include:
- Accessories
- Backpacks and Bookbags
- Baseball Hats
- Beanies
- Belts
- Blazers
- Boxer Briefs
- Casual Pants
- Chinos Pants
- Chains
- Coffee
- Cologne
- Dress Shirts
- Dress Shoes
- Flannels
- Golf Attire
- Jackets
- Jeans
- Overcoats
- Polos
- Pullovers
- Scarves
- Shave Kits and Shave Cream
- Shorts
- Sleepwear
- Slip-On Shoes
- Soap
- Socks
- Sports Jackets
- Suits
- Sunglasses
- Sweaters
- Sweatpants and Joggers
- T-shirts and Graphic T-shirts
- Ties and Tie Clips
- Tuxedoes
- Vests
- Wallets
- Zip-up Sweatshirts and Hoodies
Testimonials
On 8/28/2025
Doug Claypool
had this to say:
Awesome store, super busy when I was there but the owner took time to deal with everyone.
On 8/26/2025
Linda Shiver
had this to say:
Wonderful service and quick delivery. Love the loungewear!!
On 8/21/2025
Austin Smith
had this to say:
Greatly appreciate the knowledge and guidance provided. Wants a repeat customer and not a quick buck. 100% recommend and will go back.
On 7/27/2025
John Kidd
had this to say:
Dudes a beast
On 7/23/2025
Tristen Underwood
had this to say:
Ran into an issue with my pants, they were able to get me taken care of at a low price, and in less than a few hours.
Wonderful service.
Contact Us
That Guy's Secret
105 Marquette Street Suite B LaSalle, IL 61301
Phone: (815) 250-0928
Email: info
Corner of 1st and Marquette
Where To Find Us
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Payment Types Accepted
Checks, American Express, Discover, MasterCard, Visa, Debit Cards
Our Hours
Holiday Hours May Vary. Please Call For Details.
Monday: 10:00 AM - 4:00 PM
Tuesday: 10:00 AM - 5:00 PM
Wednesday: 10:00 AM - 5:00 PM
Thursday: 10:00 AM - 7:00 PM
Friday: 10:00 AM - 4:00 PM
Saturday: 10:00 AM - 4:00 PM
News
High schoolers and parents — Homecoming is coming fast, and we’ve got your outfit covered from August 13 to September 13. Choose from multiple colors to match your date or school. Appointments are encouraged for best fit and selection, but walk-ins are welcome. 📍 Visit That Guy’s Secret in Downtown LaSalle! 🔗 Book your fitting now. Parents — check “Homecoming outfit” off your list. Students — show up looking legendary. 📲 Secure your spot today!Get a full look for just $148: Dress shirt ($79), tie ($45), and dress trousers ($109) — all bundled together.
Need shoes? Add black or brown dress shoes for only $80.
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