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.
About a month after the rumors surfaced that Fast & Furious star Jordana Brewster and split from her husband Andrew Form, she has officially filed for divorce.