Mary Elizabeth Aitcheson Gore (born August 19, 1948) is an author, photographer, former "Second Lady of the United States," and the wife of Al Gore, from whom she is separated. She is referred to as "Tipper." She and Al Gore separated in 2010. She is known for her role in the Parents Music Resource Center (PMRC), criticizing music with profane language and promoting Parental Advisory stickers (known as "Tipper Stickers") on record covers, especially in the heavy metal, punk and rap genres.