Wanna know what and caused a panicked Anne Hathaway to ditch her planned Valentino gown in favor of a Prada creation at the Oscars? Here ya go…

An insider close to the situation tells Us Hathaway learned during an Oscar rehearsal that costar Amanda Seyfried planned to wear a dress notably similar to hers to the ceremony. After Hathaway asked about her pal’s dress, Seyfried graciously shared an iPhone snap of the Alexander McQueen creation.

“Anne was like ‘WTF?!’” the source reports. “She started throwing a fit!” The 30-year-old Best Supporting Actress victor, however, “never told Amanda she had to change the dress.” Still, Seyfried, 27, was ruffled by Hathaway’s tirade. “Amanda didn’t want to deal with it and left” the rehearsal, the source notes.

But, the drama continues…”Anne made the fashion, make up, hair, and jewelry teams wait at her home for hours as she decided what to do about the dress debacle,” a second insider tells Us. The star also “asked for silence so she could rehearse her singing for the Les Mis tribute at the Oscars. It was a painfully long experience.”

Photo: FameFlynet

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