"Guess Who I Saw Today" is a popular jazz song written by Murray Grand with lyrics by Elisse Boyd.
 The song was originally composed for Leonard Sillman's Broadway musical revue "New Faces of 1952" in which it was sung by June Carroll.
Paul David Nassau (January 30, 1930 in New York City – March 9, 2013 in Palm Beach Gardens) was an American composer and lyricist for the stage.
 He contributed songs to the musical revue "New Faces of 1956", and wrote both the music and lyric to the Broadway shows "Happy Town" (1959), "A Joyful Noise" (1966), and "The Education of H*Y*M*A*N K*A*P*L*A*N" (1968).
 He married Chloe Anderson on December 23, 1953.
 The couple had two children: Robert and Julie.
New Faces of 1952 is a musical revue with songs and comedy skits.
 It ran on Broadway for nearly a year in 1952 and was then made into a motion picture in 1954.
 It helped jump start the careers of several young performers including Paul Lynde, Alice Ghostley, Eartha Kitt, Robert Clary, Carol Lawrence, Ronny Graham, performer/writer Mel Brooks (as Melvin Brooks), and lyricist Sheldon Harnick.
Carol Lawrence (born September 5, 1932) is an American actress, most often associated with musical theatre, but who has also appeared extensively on television.
"Monotonous" is a popular song written by June Carroll and Arthur Siegel for Leonard Sillman's Broadway revue "New Faces of 1952".
 The song was written based on the experiences of its singer Eartha Kitt.
 It was performed, at the insistence of Kitt, on three chaise longues (Kitt tried originally for six and was given three in compromise), crawling cat-like from one to the other, demonstrating her flexibility and her dance training from the Katherine Dunham Company.
 The song also includes references to many well-known people of the 1950s.
 People referenced in the song include:
How to Eat Like a Child – And Other Lessons in Not Being a Grown-up is an original musical comedy television special that aired on NBC on September 22, 1981.
 Based on Delia Ephron's best-selling book of the same name, and adapted for television by Judith Kahan with music and lyrics by John Forster, the one-hour special, through a series of comedy skits and songs, lampoons the adult world through the eyes of children.
 The musical variety stars Dick Van Dyke as the resident "grown-up" alongside 15 children (8 boys and 7 girls) ranging in age from 7 to 13.
 Several of the special's young performers would subsequently go on to achieve child stardom in their own right, most notably Corey Feldman, Billy Jacoby and Georg Olden.
New Faces is a 1954 American film adaptation of the musical revue "New Faces of 1952" directed by Harry Horner and sketches directed by John Beal.
 Filmed in Cinemascope and Eastmancolor it was released by Twentieth Century Fox on March 6, 1954.
Mary Begoña (born 1929 in Bilbao, Spain) was the stage name of María Bragas Begoña who was a Spanish vedette and actress.
 She started dancing at age 7 and performed in venues in Madrid while she was studying at the Academies of Quiroga, Ompín and Monreal.
 Then she studied with Antonio Bautista and Sacha Goudine in Barcelona.
 She debuted in a musical revue at the age of fourteen and during Spanish Civil War (from 1936 to 1939) was part of the CNT Union.
 In 1943, Begoña worked in Valencia in Juanita Reina's acting troupe, but returned to Madrid to debut in the Teatro Calderón.
 In 1945 she appeared in the revue "Danubio Azul" (Blue Danube) with Manolo Caracol and Lola Flores and the following year was the principal vedette in the revue "De la Tierra a Venus" (From the Earth to Venus).
 For the next several years she performed in variety shows with various acting troupes, such as "Tres días para quererte" (1945), "¡Róbame esta noche!"
 (1947), "A La Habana me voy" (1948).
 In 1951, she did a season in the US and then returned to Spain appearing in "¡A vivir del cuento!"
 (1952) and "Los líos de Elías" (1954).
 Begoña then formed her own company, which between 1953 and 1960 performed ten different plays.
 As her career declined in revue style shows, she began performing in comedy theater, film, and television.
Leonard Sillman (May 9, 1908 - January 23, 1982) was an American Broadway producer.
 Born in Detroit, Michigan on May 9, 1908, he was the brother of June Carroll, the brother-in-law of Sidney Carroll and the uncle of Steve Reich and Jonathan Carroll.
 He is perhaps best known for his series of musical revues, "Leonard Sillman's New Faces", which introduced many major stars to Broadway audiences, such as Eartha Kitt, Inga Swenson, Paul Lynde and Maggie Smith.
 Versions of "New Faces" were produced in 1934, 1936 (made into the film "New Faces of 1937"), 1943, 1952 (made into the film "New Faces"), 1956, 1962 and 1968.
 The very first "New Faces" in 1934 included actors Henry Fonda, Imogene Coca and Frances Dewey Wormser.
Leonard Sillman's New Faces of 1968 is a 1968 musical revue produced by Leonard Sillman.
 The original production included Madeline Kahn.

Question: New Faces of 1952 is a musical revue with songs and comedy skits, it helped jump start the career of which young performer, and American actress?
Answer: Carol Lawrence