In an open letter signed by some of Broadway's biggest stars, LuPone was accused of bullying, harassment, and “racialized disrespect.”

Patti LuPone also called out McDonald's performance in Gypsy.

LuPone's shocking response to Broadway veteran Kecia Lewis, who accused her of microaggressive behaviors, spurred a lot of chatter — and experts have thoughts.

LuPone previously worked with McDonald before criticizing her in a new wide-ranging interview.Key PointsPatti LuPone had a shady reaction to questions about Audra McDonald in a new interview.The Tony winner said McDonald is "not a friend" to her after previously working together.

LuPone starred in The Roommate opposite Tony-nominated Mia Farrow earlier in the Broadway season when she took issue with the loudness of their neighboring show, the Alicia Keys jukebox musical, Hell’s Kitchen. The sound was reportedly bleeding through from theater-to-theater, causing an issue for LuPone.