'Cougar Town" co-star Busy Philipps announced Monday that she and her screenwriter husband Marc Silverstein are expecting their second child. Philipps, 33, tweeted, "So this happened . . ." alongside a photo of a Clearblue pregnancy test that registered Pregnant. A representative confirmed the pregnancy to Us Weekly. Philipps and "The Vow" screenwriter Silverstein, who married in 2007, have a daughter, Birdie Leigh, 4. Philipps is also the godmother of MatildaLedger, 7, the daughter of her friend and former "Dawson's Creek" co-star Michelle Williams and the late Heath Ledger.