Busy Philipps welcomes baby girl

Mark Silverstein and actress Busy Philipps attend the 2012 People's Choice Awards at Nokia Theatre L.A. Live on January 11, 2012, in Los Angeles. Frazer Harrison/Getty Images

Busy Philipps and her screenwriter husband, Marc Silverstein, are parents for a second time.

The 34-year-old actress announced her baby's arrival on Twitter:

Philipps gave birth on Tuesday. There's no word on the newborn's name, but a rep told People, "Everyone is healthy and happy."

The "Cougar Town" star announced her second pregnancy in December.

The baby girl joins the couple's 4-year-old daughter, Birdie Leigh.

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