Question: What British actor, producer, and socialite, who lived in the United States throughout his adult life starred in a 1948 American musical film starring Judy Garland?
Sentence (from "Easter Parade (film)"): Easter Parade is a 1948 American musical film starring Judy Garland, Fred Astaire and Peter Lawford, featuring music by Irving Berlin, including some of Astaire and Garland's best-known songs, such as "Easter Parade", "Steppin' Out with My Baby", and "We're a Couple of Swells".
Relevant evidence: Yes