Matthew McConaughey & Camila Alves are having a baby

Matthew McConaughey and Camila Alves are expecting their third child together.

The Magic Mike star and his model wife announced there would be a further addition to the family via his twitter page on 4th July.

He wrote: “Happy birthday America, more good news, Camila and I are expecting our 3rd child, God bless, just keep livin.”

Matthew and Camila married only one month ago at their home in Texas, United States.

The 42-year-old actor’s 29-year-old spouse tweeted the same message just 20 minutes before her partner did.

Matthew McConaughey and Camila Alves at the 2012 Los Angeles Film Festival Closing Night Gala Premiere, 24th June. Source: Getty

The couple are already parents to two-year-old daughter Vida, and almost-four-year-old son Levi.

When asked on their wedding weekend about their dreams for the future, the couple told People magazine:

“More of the same — and more family!”

Matthew recently said he "didn't like" his latest crime thriller movie Killer Joe and it made him want to "clean himself with a steel-brush".

The How to Lose a Guy in 10 Days actor admitted the crime thriller - which contains suggestions of incest and a lot of nudity - was a far reach from his romantic-comedy past and made him feel "sick".