Bach was one of the most sought-after faces of the 1960s, working with the Eileen Ford Agency in New York, appearing on catalogs and the front covers of several international fashion magazines such as Seventeen (1965 and 1966), Vogue USA (July 1966) photographed by Richard Avedon, ELLE France (1966), Gioia Italy (1967–1970), and Figurino Brazil (1970).

Her acting career started in Italy, where she played Nausicaa in L'Odissea in 1968, an eight-hour long TV adaptation of Homer's epic poem The Odyssey, directed by Franco Rossi and produced by Dino de Laurentiis.

[7] During an interview with Johnny Carson on May 9, 1979, she said that she lost the audition for Charlie's Angels because they felt she was too sophisticated in attitude and look, and thought that she was not American, even though she was born in Rosedale and grew up in Jackson Heights, both in Queens, New York City.

In 1991, Bach co-founded the Self Help Addiction Recovery Program (SHARP) with Pattie Boyd, the former wife of George Harrison and Eric Clapton,[9] both of whom assisted in the venture.

[7] Bach married British musician Ringo Starr, formerly of the Beatles, at Marylebone Town Hall on April 27, 1981.

[7] Bach struggled with alcoholism and heavy drug use and, along with her husband, Ringo Starr, checked into a rehab in 1988 for four weeks.