Catherine Zeta-Jones inadvertently gave New York theatergoers an eyeful last week when she flashed her breasts during the Broadway production of A Little Night Music.

The Welsh beauty — a mother of two — is starring alongside Angela Lansbury in the Stephen Sondheim play, which opened to solid reviews at New York’s Walter Kerr Theatre earlier this month.

During one scene, Catherine turns her back on the audience and opens her kimono to flash her long lost lover. Unbeknownest to the Chicago Oscar-winner, at least three lucky audience members also caught a glimpse of the 40-year-old’s ample bosom.

“I couldn’t believe it. No wonder Michael Douglas looks so happy. The couple sitting next to me also saw it and poked each other.”