Was a huge friend of the singer Freddie Mercury.
Was actually the second choice to play Sally Bowles in Cabaret (1972). Barbra Streisand was offered the part first, but she turned it down because she wanted to move away from musicals.
Was briefly managed by KISS lead singer/guitarist Gene Simmons in the 1980s.
Was childhood friends with Mia Farrow, Cheryl Crane and Katy Manning.
When she was young she befriended Marilyn Monroe.
While Frank Sinatra's version of "New York, New York" is played at Yankee Stadium after every Yankee home win, Liza Minnelli's version is played after every Yankee home loss.