In fact, the actress had known the Oscar winner since she was 10 years old as he is a family friend.
The 43-year-old actor shared the sad news on Instagram.
How do celebs make their money and what do they spend it on? Social media plays an important part in their success.
She was pictured running errands in Los Angeles while wearing a diamond ring on her left ring finger.
Irwin has been very open about her pregnancy, as she had been about dating and marrying Chandler Powell.
This is the third marriage for Sean Penn as he was also married to Madonna fand Robin Wright.
