Jessica Simpson gave birth to her second child Sunday, a baby boy named Ace Knute Johnson.

Us Weekly reports that the baby was born via C-section in Los Angeles.

"Ace Knute (pronounced Ka-nute) Johnson has arrived! Mom and baby are doing great," a rep told the publication. "Jessica, Eric and Maxwell are thrilled to welcome the new addition to their family."

Simpson and husband Eric Johnson also have a daughter, 14-month-old Maxwell.