Pauline Esther "Popo" Phillips (née Friedman; July 4, 1918 – January 16, 2013), also known as Abigail Van Buren, was an American advice columnist and radio show host who began the Dear Abby column in 1956. During her decades writing the column, it became the most widely-syndicated newspaper column in the world, syndicated in 1,400 newspapers with 110 million readers.
From 1963 to 1975, Phillips also hosted a daily Dear Abby program on CBS Radio. TV anchorwoman Diane Sawyer calls her the "pioneering queen of salty advice."
Pauline Esther Friedman, nicknamed "Popo", was born in Sioux City, Iowa to Russian Jewish immigrants, Rebecca (née Rushall) and Abraham B. Friedman, owner of a chain of movie theaters. She was the youngest of four sisters and grew up in Sioux City. Her identical twin, Esther Pauline Friedman, was columnist Ann Landers. Lederer had become Ann Landers in 1955, and inspired by her sister's example, Phillips soon followed suit by launching her own advice column.