Did made a album for children titled Mommy, Give Me a Drinka Water for Ambassador Records in 1995.
Didi made her Broadway debut in Lost in Yonkers playing Bella in 1991.
In 2003, Didi began playing Gracie Allen in the Broadway play Say Goodnight Gracie.
She played Carmela in the 2005 Off-Broadway production of Souls of Naples.
Didi is the sister of Richard Bernstein who is a bass-baritone opera singer.
Didi's first husband was Frankie Conn.
Didi has kept a close friendship with her 1978 Grease co-star Olivia Newton-John.
In 1976, the night before Didi Conn was to appear as a celebrity panelist for the first time on Match Game '76, she happened to be sitting next to MG'76 host Gene Rayburn and his daughter as they both attended a Chita Rivia concert. She introduced herself to Rayburn saying, "Hi, I'm Didi Conn, I'm going to be on Match Game tomorrow." Rayburn, not being familiar with Conn's series The Practice, assumed she was a contestant and said, "I can't talk to you." Rayburn's daughter, who DID know Conn's series, explained to her Dad and he apologized.
Didi's book, titled Frenchy's Grease Scrapbook: We'll Always Be Together!, was published in 1998 by Hyperion (New York).
She is married to David Shire, with whom Didi has one son, Daniel (born in 1992).
Didi: We've been planning one for years, and I've had meetings with writers, but they just don't get the innocence of Grease. The scripts are not right - they're sad, and everybody's a loser. I don't think John is interested anymore, and he's convinced Olivia not to do it. The feelings of John, Olivia and Stockard [Channing] are to let those characters be. I even read one script that had John's character dead. It was such a downer. That's not Grease - Grease is always an upper! (on the prospect of filming Grease 3)
Didi: It doesn't matter how your child comes to you. I've never felt such joy and such love. It's the most beautiful delicious little thing.
Didi: We stayed in character all day long, we had everybody call us by our character's names ... that gave us the creative license to be as wild or as horny as we needed to be. (on filming Grease)
Didi: David Shire and I have been happily married for 21 years! We have a 12-year-old son. David is a genius. He writes the most magnificent music and he is a devoted and loving husband and father. I am so blessed!
Didi: I went to Midwood High School in Brooklyn and then to Brooklyn college for 1 1/2 years. I was chomping at the bit to get my career started- so after I took all the theater courses at Brooklyn College I enrolled in a two year program at AMDA in the city (The American Musical Dramatic Academy) I was there for 6 months and loved it. My teachers encouraged me to audition for some professional work during our summer vacation. I landed my first job. It was for the National Theatre Company's Mimika Pantomime troupe. I ended up touring with them for the next two years.
Didi: I could really relate to Frenchy's chomping at the bit to have a career, that kind of ambition. When I was in high school I would've done anything to start my career, I knew I wanted to act, I was in every play so I was never good at hair. I don't relate to that part, although actually Frenchy wasn't all that good either. (on her character Frenchy in Grease)