American actress and model. She is best known for playing Betty Draper on Mad Men and Emma Frost in X-Men: First Class. Jones was born and raised in Sioux Falls, South Dakota, the daughter of Karen, who manages a sporting goods store, and Marvin Jones, a coach, gym teacher, and fitness director. She is named after January Wayne, a character in Jacqueline Susann‘s Once Is Not Enough. She has two sisters – Jacey and Jina.
Jones has had supporting roles in Anger Management (2003), Love Actually, and Dirty Dancing: Havana Nights. In 2005, she appeared as a U.S. border guard’s frustrated wife in the film The Three Burials of Melquiades Estrada directed by and starring Tommy Lee Jones. In We Are Marshall (2006), she played the role of Carol Dawson, wife of football coach William “Red” Dawson.