Anna Paquin and Stephen Moyer: Twins on the way for 'True Blood' stars

"True Blood" stars Anna Paquin and Stephen Moyer are expecting twins!

The couple, who met on set of HBO's hit vampire series and wed nearly two years ago, confirmed this spring that Paquin, 29, was pregnant for the first time with a fall delivery date.

Moyer, 42, who has two children, Lilac, 10, and Billy, 12, from a previous relationship, recently told Zap2it, "I love my kids so much. And I think that the fact that Anna is pregnant just adds more crazy to the bundle of fun."

Now they'll experience a double dose of crazy and fun -- just like their costar, Sam Trammell, who has 11-month-old twins of his own with girlfriend Missy Yager.

"I'm so excited for them," Trammell tells Us Weekly. "It's so interesting that 'True Blood' has become, like, the 'twins' show."