Jessica Simpson and Eric Johnson's daughter has a new playmate -- a baby brother named Ace. Simpson's representative confirmed that the entertainer gave birth to Ace Knute in Los Angeles on June 30, 2013, via planned C-section. The details were first reported by Us Weekly. A rep said, "Ace Knute (pronounced Ka-nute) Johnson has arrived! Mom and baby are doing great. Jessica, Eric and Maxwell are thrilled to welcome the new addition to their family."

It's official: Jessica Simpson is pregnant with her second child. Simpson, 32, confirmed the baby news in a message posted on Twitter on Dec. 25, 2012, amid growing speculation that she and fiance Eric Johnson were expecting again. The announcement comes just seven months after Simpson and Johnson welcomed their first child, daughter Maxwell Drew Johnson.

Jessica Simpson arrives to the NBC Universal 2012 Winter TCA Tour All-Star Party on Jan. 6, 2012, in Pasadena, Calif.

Jessica Simpson and Eric Johnson attend the launch of Jessica Simpson Girls at Dylan's Candy Bar on Dec. 1, 2011, in New York.

Jessica Simpson visits SIRIUS XM Studio on Nov. 23, 2010, in New York.

Ashlee Simpson and Jessica Simpson pose at the Victoria Beckham and Eva Longoria Parker Night of Fashion & Technology on May 24, 2010, in West Hollywood, Calif.

Jessica Simpson accepts the Favorite Song from a Movie Award onstage at the 32nd Annual People's Choice Awards at the Shrine Auditorium Jan. 10, 2006 in Los Angeles.

Jessica Simpson attends the Gucci Spring 2006 Fashion Show for the benefit of the Children's Action Network at Michael Chow's residence Nov. 17, 2005, in Beverly Hills, Calif.

Jessica Simpson arrives at the 2005 MTV Video Music Awards at the American Airlines Arena on Aug. 28, 2005, in Miami, Fla.

Jessica Simpson poses in the press room at Madison Square Garden during the Z100 Zootopia 2004 Concert May 21, 2004, in New York City.

Jessica Simpson attends the Met Costume Institute Gala Celebrating Chanel at the Metropolitan Museum of Art May 2, 2005, in New York City.

Jessica Simpson performs at the DTE Energy Theater in Clarkston, Mich. on June 25, 2004. The concert appearance was part of a summer tour promoting her album, "In This Skin."

Jessica Simpson appears on stage during MTV's Total Request Live at the MTV Times Square Studios March 1, 2004 in New York City.

Jessica Simpson performs at the 7th Annual VH1 "Divas" Concert at the MGM Grand Garden Arena, April 18, 2004, in Las Vegas, Nev.

Jessica Simpson arrives at the Clive Davis Pre-Grammy Party at the Beverly Hills Hotel Feb. 7, 2004 in Beverly Hills.

Jessica Simpson arrives at the 31st annual American Music Awards, Nov. 16, 2003, at the Shrine Auditorium in Los Angeles.

President Bush walks past singer Jessica Simpson and USO Chairman John Gottschalk as he honored the United Service Organizations (USO) during a reception in the White House East Room on Nov. 2, 2001, in Washington.

Jessica Simpson smiles on stage as she introduces the vocal group 98 Degrees at the 2000 Jingle Ball in New York's Madison Square Garden, Dec. 14, 2000.