JULIA ROBERTS’ half sister Nancy Motes has finally confirmed what EN­QUIRER readers have known for years – that the “Pretty Woman” star continually scold­ed her over her weight!

Making headlines in the U.S. and around the world, Nancy, 37, recently told an inter­viewer that her famous sibling teased her mercilessly about her appearance.

“When I was in High School and she was an adult, she would just let me know that I was definitely overweight,” said Nancy, who once weighed nearly 300 pounds. She added that it made her “feel incredibly hurt and very sad.”

ENQUIRER read­ers have known the weighty family history since 2011, when we first shared the story of the sisters’ bickering over Nancy’s expand­ing waistline.

 “Julia’s made no secret of the fact that she’s not hap­py that Nancy’s gotten heavy,” said an insider at the time. “She thinks it’s humiliating for her and the entire family.”

We reported that tensions between the sisters came to a head at Nancy’s birthday party in May 2011 at their mother’s home in Pacific Pali­sades. When Nancy learned that Julia was making unkind comments behind her back, she shot back: “(Bleep) you!”

Due to the years of criticism, Nancy underwent gastric bypass surgery in June 2012 and now tips the scales at 155.

The ENQUIRER most recently re­ported that Julia, 45, planned to skip Nancy’s wedding to fiancĂ© John Dilbeck next year because she hates the groom and doesn’t want to get stuck with the bill.

Said the source: “Now, with Nancy openly attacking her in the press, this just ices it.”