The former Dawson's Creek star and her husband Marc Silverstein are expecting their second child next year (13).
Posting an image of a positive pregnancy test on her Twitter.com account on Monday (10Dec12), Philipps wrote, "So this happened..."
And her representative, Carrie Byalick, tells Life & Style magazine, "I can confirm she is pregnant."
The couple is already parents to four-year-old daughter Birdie Leigh.
