Sue McCarthy and daughters Diana Ford and Laura Maurice, who run the highly-successful designer resale shop The Women’s Closet Exchange in St. Louis, MO, weren’t looking to be on a reality show when Rachel Zoe came a-knockin’ with the idea for Resale Royalty, premiering Sunday, May 12 on Style Network.

OK! News: Who Got Knocked Out Of The Competition on 'Dancing with the Stars' This Week?

“Her stylists have been shopping at our store for years and getting some really unique pieces,” explains Diana.

“We never sought them, they sought us because of who we are and what we are and our national recognition,” says Sue. “We’re sort of an enigma in where we are. We’re in the Midwest, we’re not in LA or New York, but we’re the best and we have the best. It comes to us from all over the country and all over the world.”

OK! News: What Super Sweet Thing Did Nick Cannon Say About His Wife?

For those seeking designer items at a discount (I mean, really, who isn’t?), the Resale Royalty ladies offer up some wise advice:

Patronize trustworthy resale shops.

“There is an organization called the National Association of Resale Professionals (NARTS), and that organization adheres to a code of ethics so that any shop with that NARTS seal on the window you would say that they’re supposed to have authentic items. It’s the background of our success,” says Sue. “We’ve learned everything we know from NARTS. I would always recommend to seek out these stores.”

OK! News: Want Red Hot Hair Color? Get Some Tips Here!

Be aware of an item’s worth.

“If you’re looking at the Chanel Caviar Quilted Bag and it’s $200, it shouldn’t be,” says Diana. Sue adds, “Nobody is going to sell it for that. If it’s too good to be true, it probably is.”

Watch: Kristen Wiig Talks Life After 'Saturday Night Live'

Remember patience is key.

“You have to allow yourself time, there’s no run in and see,” says Laura of shopping resale. “There’s only one of everything, you have to make time. And because you’re making the time it’s worth it. You’re going to find that Rebecca Taylor blouse for $20.”

Watch: Peta Murgatroyd Offers Tips For Getting an Amazing Dancer's Body

Know what you want.

“I have to say the Louis Vuitton Neverfull—a lot of women want that. They want the Neverfull and the Palermo, which is a great bag,” says Diana. “And Chanel is always popular.”

Is there a fashion piece you’re currently coveting? Tell us in the comments below or tweet @OKMagazine.

Sound off in the comments below!

Join the conversation