Margaret Forster, who...

...wrote the 1965 novel Georgy Girl, died at age 77. From her obit in the Times (my emphasis):

Ms. Forster caught the flavor of the decade in “Georgy Girl,” the story of a young woman trying to get a foothold in teeming London. Her heroine, a precursor of Bridget Jones, is big, plain and saddled with an annoyingly pretty roommate.

Her adventures, recounted with comic gusto and a dose of pathos, delighted readers and made the novel, published in 1965, a best seller. The next year, it became a hit movie, with Lynn Redgrave in the title role.

Ms. Forster, with Peter Nichols, wrote the screenplay. Adding luster to the whole package, the movie’s theme song, recorded by the folk-rock group the Seekers, climbed to the upper reaches of the pop charts.