Rose Elizabeth "Libby" Cleveland was an American author and lecturer. She was acting first lady of the United States from 1885 to 1886, during the presidency of her brother, Grover Cleveland. Receiving an advanced education in her youth, Cleveland rejected traditional gender norms and sought a career for herself in a variety of literary and academic positions. When her unmarried brother was elected president, she acted in the role of first lady until his wedding with Frances Folsom. She used the role of first lady as a platform for her support of women's suffrage, expressing little interest in the household management associated with first ladies.

First Lady of the United States (FLOTUS) is the title held by the hostess of the White House, usually the wife of the president of the United States, concurrent with the president's term in office. Although the first lady's role has never been codified or officially defined, she figures prominently in the political and social life of the United States. Since the early 20th century, the first lady has been assisted by official staff, known as the Office of the First Lady and headquartered in the East Wing of the White House.