Debi Mazar says 'Entourage' set 'got toxic' after she returned from having her second daughter

"Entourage" star Debi Mazar is opening up about what she described as a difficult experience on the set of the hit show.

The actress, who played no-nonsense publicist Shauna Roberts throughout the HBO show’s eight-season run, reflected on her experience in a recent interview with The Sunday Times, calling the first season a "joy-fest" before saying the atmosphere shifted.

"In the third season, the set was a testosterone-fueled environment," Mazar told the outlet. "I’m tough, but it...