ROMONA SINGER SAY'S BETHANY FRANKEL IS NOT TELLING THE TRUTH ABOUT HER MONEY!

Is Bethenny Frankel inflating her worth?

Last month, the reality star revealed that being on "The Real Housewives of New York" for three seasons helped her build her SkinnyGirl brand to the tune of $120 million.

But Housewife and onetime friend Ramona Singer is calling BS on that claim.

In an interview with PopEater, Singer -- who herself has her own jewelry and pinot grigio lines -- says "Oh no, she likes to exaggerate. It's rumored, remember? It didn't say fact. Rumored."

Although Frankel says she sold her SkinnyGirl Margarita product for the nine-figure price tag, Singer doesn't think the math adds up since she says the pre-mixed beverage is sold in only 14 states (Frankel claims it's distributed in 40 states).

"Maybe about $30 million total," she guesses, "and divided between her and her partner David [Kanbar]. And usually they do a pay-out, you don't get all the money upfront...they pay you out over time."

The "Bethenny Ever After" star told The Hollywood Reporter last month that she decided to join the first season of the Bravo reality show "single-handedly and exclusively for business. I'm not running around buying diamonds and getting facials. I just decided to be totally honest and own it. You can't do something you don't stand for just to make money. It's a smart audience, people will realize it."

In addition to Frankel's highly-popular Skinnygirl Margarita, the wife and mother-of-one has a workout DVD, books, a clothing line and weight-loss supplements.

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