Question: In which musical-romantic comedy did Julie Andrews and Mary Tyler Moore co-star?

Context articles: Gwen Gillen
Mary Tyler Moore
The Mary Tyler Moore Show opening sequence
Phyllis (TV series)
Thoroughly Modern Millie
Mary (1985 TV series)
Mary and Rhoda
Mary Tyler Moore filmography and awards
MTM Enterprises
Treva Silverman

Gwendolyn "Gwen" Gillen (January 6, 1941 – January 27, 2017) was an American sculptor and artist.
 Her best known works include a bronze sculpture of actress Mary Tyler Moore tossing her Tam o' shanter hat into the air as a homage to the final scene of opening credits of "The Mary Tyler Moore Show".
 Gillen life-size sculpture of Moore, which dedicated in 2002 in the Nicollet Mall in downtown Minneapolis, has own of the city's most recognizable landmarks and "symbol of Minneapolis".
 Her other well known pieces include a 4-foot bronze sculpture of Gertie the Duck, which was installed on the Wisconsin Avenue bridge in Milwaukee in 1997.
Mary Tyler Moore (December 29, 1936 – January 25, 2017) was an American actress, known for her roles in the television sitcoms "The Mary Tyler Moore Show" (1970–1977), in which she starred as Mary Richards, a single woman working as a local news producer in Minneapolis, and "The Dick Van Dyke Show" (1961–1966), in which she played Laura Petrie, a former dancer turned Westchester homemaker, wife and mother.
 Her film work includes 1967's "Thoroughly Modern Millie" and 1980's "Ordinary People", in which she played a role that was very different from the television characters she had portrayed, and for which she was nominated for an Academy Award for Best Actress.
"The Mary Tyler Moore Show" opening sequence is an element of the American television series "The Mary Tyler Moore Show".
 In 1999, "Entertainment Weekly" picked Mary Richards' hat toss at the end of the sequence as the 1970s' second-greatest television moment.
 The theme song, "Love Is All Around", was written and performed by Sonny Curtis.
Phyllis is an American sitcom that aired on CBS from September 8, 1975, to March 13, 1977.
 Created by Ed Weinberger and Stan Daniels, it was the second spin-off of "The Mary Tyler Moore Show" (the first being "Rhoda").
 The show starred Cloris Leachman as Phyllis Lindstrom, who was previously Mary Richards' landlady on "The Mary Tyler Moore Show".
Thoroughly Modern Millie is a 1967 American musical-romantic comedy film directed by George Roy Hill and starring Julie Andrews.
 The screenplay by Richard Morris, based on the 1956 British musical "Chrysanthemum", focuses on a naive young woman who finds herself in the midst of a series of madcap adventures when she sets her sights on marrying her wealthy boss.
 The film also stars Mary Tyler Moore, James Fox, John Gavin, Carol Channing, and Beatrice Lillie.
Mary is an American sitcom that aired on CBS from December 11, 1985, to April 8, 1986.
 The series stars Mary Tyler Moore in her return to series television after an absence of over six years, during which time she appeared on Broadway in "Whose Life Is It Anyway?
" and in the dramatic film "Ordinary People".
 After "The Mary Tyler Moore Show", her subsequent ventures into series television on the variety shows "Mary" (1978) and "The Mary Tyler Moore Hour" (1979) had been short-running ratings disasters, and Moore decided to return to the sitcom format which had brought her the greatest television success; the sitcom nonetheless met the same fate as the variety shows.
Mary and Rhoda is a 2000 American made-for-television comedy-drama film starring Mary Tyler Moore and Valerie Harper reprising their roles as Mary Richards and Rhoda Morgenstern from the 1970–77 sitcom "The Mary Tyler Moore Show".
Mary Tyler Moore (December 29, 1936 – January 25, 2017) was an American actress, known for her roles in the television sitcoms "The Mary Tyler Moore Show" (1970–1977), in which she starred as Mary Richards, a thirtyish single woman who worked as a local news producer in Minneapolis, and "The Dick Van Dyke Show" (1961–1966), in which she played Laura Petrie, a former dancer turned Westchester homemaker, wife and mother.
 Her notable film work includes 1967's "Thoroughly Modern Millie" and 1980's "Ordinary People", in which she played a role that was very different from the television characters she had portrayed, and for which she was nominated for an Academy Award for Best Actress.
MTM Enterprises (later known as MTM Enterprises, Inc.) was an American independent production company established in 1969 by Mary Tyler Moore and her then-husband Grant Tinker to produce "The Mary Tyler Moore Show" for CBS.
 The name for the production company was drawn from Moore's initials.
Treva Silverman is an American screenwriter.
 She is best-known for her work on the 1970s sitcom "The Mary Tyler Moore Show".
 She won two Emmy Awards in 1974 for her work on "Mary Tyler Moore", winning both Outstanding Writing in a Comedy Series and Writer of the Year.