Anna Paquin and her husband Stephen Moyer are expecting twins.

In April (12) the True Blood actors confirmed they are set to welcome their first child this autumn (12) and now their co-star Sam Trammell, who is a dad to 11-month-old twin boys, has leaked news Paquin is actually eating for three.

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

The 43 year old also admits he and his wife Missy Yager are busy compiling advice to share with the pair ahead of its double delivery, adding, "It's harder having twins, but it's all we know. So we're trying to impart some decent wisdom. I told them to hold on tight!"

Moyer already has two kids from previous relationships - Lilac, 10, and Billy, 12.

Paquin and the British hunk, who play lovers in the hit TV vampire drama, married in Malibu, California in 2010.