Jessica Simpson has given birth to her second  child, a baby boy.

Ace Knute Johnson was born on Sunday in Los  Angeles after Jessica, 32, had a scheduled C-section.

A rep told UsWeekly: ‘Ace  Knute (pronounced Ka-nute) Johnson has arrived! Mom and baby are doing  great.’

Baby joy! Jessica Simpson has given birth to son called  Ace Knute Johnson

The singer and her 33-year-old fiance Eric  Johnson are already parents to daughter Maxwell who is almost  14-months-old.

The couple’s rep says: ‘Jessica, Eric and  Maxwell are thrilled to welcome the new addition to their family.’

Ace’s middle name honors dad Eric’s Swedish  paternal grandfather, Knute Johnson, and is pronounced ‘Ka-nute’.

Happy news: Jessica gave birth after having a c-section  at a hospital in LA on Sunday

The Fashion Star mentor accidentally revealed  she and her fiancé, a former NFL player and Yale grad, were having a son during  a TV interview with Jimmy Kimmel in March.

In typical Jessica fashion the news slipped  out accidentally.

‘The crazy thing is I never knew a wiener  could make me nauseous,’ she told the chat show host.

‘Ace Knute Johnson has arrived! Mom and baby are doing  great!’ Jessica and her fiancé Eric Johnson are overjoyed over the new  arrival

Jessica then laughed off the on-air mistake,  saying: ‘Well I guess I just told the world that I’m having a boy!’

‘I can’t believe I just did that, that was  not planned,’ Jessica said good-naturedly. Later she said, ‘I just did it so  crude, I feel awful!’

But she didn’t seem too worried by the gaff,  as she later tweeted: ‘Accidental announcement tonight on  @jimmykimmel’.

Wedding planners: The couple have had to postpone their  wedding twice following Jessica’s two back-to-back pregnancies

The star is surely relieved to welcome her  son, as her pregnancy has not been easy.

She told Ellen DeGeneres earlier this year:  ‘This pregnancy is the complete opposite. Like with Maxwell, I felt amazing.  Like I could do everything, eat everything.

‘Do whatever I wanted. I had a lot of  energy.‘

‘[But] this time around,’ she explained, ‘I’m  like exhausted. Eating Tums. That’s my snack of choice.’

More to come: Jessica is said to be planning a wedding  in the next few months following her wedding

A source close to the couple, who got engaged  in 2010, previously revealed that they were keen to tie the knot shortly after  the birth of their son.

But the blonde beauty fears she may fall  pregnant again and be forced to cancel her wedding plans a third time, having  previously nixed their nuptials because of the unexpected baby news.

In March, Jessica said humorously of her  situation: ‘I keep planning on getting married but I keep getting knocked  up.’

A source said: ‘[Jessica] was telling friends  she wanted to get married a few months after the baby is born.’

Happy mom: The Fashion Star is also mother to 14-month-old Maxwell, pictured in Calabasas, California

Read more: DailyMail