True Blood's Sookie and Bill may not be together right now on the series, but in real life Anna Paquin and Stephen Moyer are expecting twins! Perhaps there's something in the water on set? The couple's costar Sam Trammell also had twins just last year!

"I'm so excited for them," Sam Trammell, father to 11-month-old twins Winston and Gus with girlfriend Missy Yager, told Us Weekly. "We sent them a special gift. It's so interesting that True Blood has become, like, the 'twins' show."

Even though Moyer, 42, has two children, Lilac, 10, and Billy, 12, from a previous relationship, he's still been listening to Trammell's advice on twins.

"It's harder, having twins, but it's all we know. So we're trying to impart some decent wisdom," Trammell adds. "I told them to hold on tight!"

Moyer has made it clear that he's up for the challenge. "It's always amazing," he told Zap2it last May of Paquin's pregnancy. "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."

Congrats to one of our favorite True Blood couples!