TWEEN queen Mary-Kate Olsen has taken time out from uni to focus on her entertainment empire, her spokesman has said.

Mary-Kate had already returned to Los Angeles but would visit New York in November to accept a fashion award, spokesman Michael Pagnotta said. "She’s not dropping out. She’s taking an approved leave of absence to focus on her increasing responsibilities and live her life," Mr Pagnotta said.

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Mary-Kate’s twin Ashley will remain at New York University’s Gallatin School, where the 19-year-old entrepreneurial stars were sophomores studying liberal arts, Mr Pagnotta said.

"She and her sister run a global business and it demands quite a bit of their time," he said.
The mini-moguls are co-presidents of Dualstar Entertainment Group, a multimillion-dollar brand aimed at the tween market, with home videos, CDs, books, apparel, fragrances and dolls.

Fortune magazine last year estimated they were worth $US137 million ($180 million) each.
Mary-Kate, who was treated for an eating disorder in 2004, was not taking taking time out for health reasons, Mr Pagnotta said.