Oprah Winfrey is opening up about the extreme lengths she’s taken to lose weight over the years … revealing she previously starved herself in order to drop some pounds.

The talk show legend discusses her years of yo-yo dieting in her new ABC special, “Shame, Blame and the Weight Loss Revolution,” sharing that it took a liquid diet to help her lose 67 pounds — which she famously marked in 1988 by wheeling out a wagon filled with fat during an episode of her talk show.

The revelation she’s making in the special, though, is that celebration of weight loss was extremely short-lived — Oprah now admits she began gaining the weight back almost the very next day after that show … becoming the object of public ridicule.

Weight loss has become a major part of Oprah’s brand, having previously become a brand ambassador for, and major investor in, WeightWatchers.

Everyone remembers her “I love bread” commercial, right?

She resigned from the WW board of directors after nearly 10 years… after admitting that she is currently using weight loss pills.

Oprah says she left WeightWatchers to avoid a conflict of interest while making this new ABC special … since WW is now doling out weight loss drug prescriptions.

She’s praised the weight loss drug she used, crediting it for recently shedding 40 lbs.