High Quality Content by WIKIPEDIA articles! Chellsie Marie Memmel (born June 23, 1988 in West Allis, Wisconsin) is an American gymnast. She is the 2005 World All-Around Champion, making her the third American woman, after Kim Zmeskal and Shannon Miller, to become World Champion in the All-Around. She is also a World Champion on the uneven bars (2003) and as part of the U.S. team (2003). She is a member of the United States` 2008 Olympic women`s gymnastics team.