Oh no!

In an exclusive new interview with Closer Weekly, Shirley MacLaine revealed the surprising reason why she has never — and likely never will — work with her brother, Warren Beatty.

warren beatty shirley maclaine getty images

Warren and Shirley in April 1966.

“Oh, I don’t think we’d be a good team,” the 82-year-old actress told Closer at the TMA Heller Awards on Thursday, Nov. 10 in Beverly Hills, Calif.

MUST SEE: Shirley MacLaine Says Sleeping With Other People is the “Basis for a Long-Lasting Marriage”

So how does Warren, 79, feel about making a movie with his older sister? “[That’s] not a bad idea,” he recently told CBS Sunday Morning. Too funny!

For the full story on Shirley and Warren, pick up the new issue of Closer Weekly on newsstands now!

closer cover

For more exclusive news from Closer Weekly, be sure to sign up for our newsletter!