United Kingdom, May 31 -- Over 500 Broadway artists have signed an open letter condemning Patti LuPone.

After Patti, 76, hit out at fellow actors Kecia Lewis, who she called a b****, and Audra McDonald, who she said was "not a friend" in a recent New Yorker interview, a number of fellow professionals blasted the "degrading and misogynistic" comments.

The letter - provided to Playbill - said of LuPone's comments about Lewis: "it is a blatant act of racialised disrespect. It constitutes bullying. It constitutes harassment. It is emblematic of the microaggressions and abuse that people in this industry have endured for far too long, too often without consequence".

Regarding LuPone's remarks about McDonald, the letter states: "To publicly ...