How will she ever show up on time for eight shows a week?

Troubled Lindsay Lohan will make her theater debut in a London revival of David Mamet’s “Speed-the-Plow.”

Lohan’s role was originated by Madonna in 1988 on Broadway.

The Post said then: “Madonna tries hard . . . but sounds more as if she were auditioning than acting.”

Lohan begins previews Sept. 24.

But can LiLo, as Oprah Winfrey told her when she tried to flake on her recent reality series, “cut the bulls - - t”?

Lohan’s last director, Paul Schrader, said of her commitment to his film “The Canyons,” “I’ve been hostage to a very talented but unpredictable actress,” and, “She never showed for the photo sessions, including . . . for the ad campaign.”