The actress welcomes son, Tennessee James, with husband Jim Toth. Tennessee was born Thursday.
"Reese Witherspoon and husband Jim Toth welcomed Tennessee James into their family today (Thursday). Both mom and baby are healthy and the entire family is thrilled," showbizspy.com quoted Witherspoon's representative as saying.
It's Witherspoon's first child with husband Toth. She shares custody of daughter Ava, 12, and son Deacon, 8, with ex-husband Ryan Phillippe, 37, from whom she split in 2006 after seven years of marriage.