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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 9/20/2026
Tina Jacklovich
had this to say:
Jeremy was so helpful in making sure my husband would be comfortable in his new suit and shirt. I love the color of the suit and tie that the lovely lady helped my husband pick out to go with the dress I will be wearing to our daughter's wedding. Now I am confident we will not embarrass her.
On 9/17/2026
Bentley
had this to say:
Exceeded the expectations
On 9/14/2026
Justin Evans
had this to say:
Highly recommend That Guy’s Secret in Peru! Jeremy is great to work with—very friendly, helpful, and full of suggestions to help you put together the look you’re going for. He takes the time to help without making you feel pressured, and you can tell he really cares about making sure you leave happy with what you picked out. If you’re looking for new clothes or shoes, definitely stop in and check them out. I’ll definitely be going back!
On 8/26/2026
10emsbob
had this to say:
I had an excellent experience. I am a BIG man and Jeremy performed his magic and found me the perfect suit. He is very personable and knowledgeable. And I love the bank building.
On 8/16/2026
Mcman007 1
had this to say:
I truly love to Get a suit for school right before I go back to college and it’s so close to home love it and the people that worked there very nice
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
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