Megan Fox and Brian Austin Green

The couple, whose son Noah will celebrate his first birthday on September 27, are reportedly thrilled after doctors confirmed that the 27-year-old 'This Is 40' star is pregnant with another little boy.

A source told In Touch Weekly magazine that the brunette beauty and the 'Anger Management' actor "found out earlier this month," adding: "They're both really excited!"

Former 'Beverly Hills 90210' star Brian recently admitted he has "no idea" how he and Megan will manage two babies.

He said: "I do whatever she asks for and I say yes no matter what it may be! She's doing great. She did great the first time around, but I wouldn't wish the experience on anybody! I couldn't do it! I couldn't make a baby, it's unbelievable!"

But Brian admitted they are not sure how they will juggle two babies, as well as his 11-year-old son Kassius from previous relationship.

He said: "I have to say, we honestly have no idea and we discuss it daily and think, 'How are we going to do this?' I think we'll just see when it happens. People do it all the time."

He added: "I'm [just] hoping for a healthy baby."

Megan is currently filming 'Teenage Mutant Ninja Turtles' and remained tight-lipped about her pregnancy until last month so that it didn't interfere with her work.

The couple first started dating in 2004 and tied the knot in June 2010.