(July 1, 2016) Married her boyfriend of 8 months Nicholas Alliegro.
Has four siblings, two brothers and two sisters: Parker Jaren O'Donnell (b. May 25, 1995), Blake Christopher O'Donnell (b. December 5, 1999), Vivienne Rose O'Donnell (b. November 29, 2002) and Dakota O'Donnell Rounds (b. January 5, 2013).
Chelsea announced in September 2017 that she was expecting a baby with Nicholas Alliegro due in early May 2018, but she never provided further updates. It is unclear what happened with that pregnancy.
(April 19, 2018) Filed for divorce from her husband of 21 months Nicholas Alliegro.