(CNN) -

It's a banner birthday year for "True Blood" star Anna Paquin.

The actress, who stole the spotlight at 11 when she won a best supporting actress Oscar for her work in 1993's "The Piano," turns 30 years old today, according to E! Online.

It's just the latest personal milestone for Paquin, who's expecting a baby with her "True Blood" co-star and husband Stephen Moyer. Rumor has it the two might even be expecting a set of twins.

Either way, the mom-to-be is "glowing," Deborah Ann Woll, who portrays the vampy Jessica on HBO's addictive show, said to E! Online. "She's so happy to become a mom."

If Paquin really does have two babies on the way, perhaps she could glean some parenting advice from fellow birthday girl and mom of twins Jennifer Lopez, who turns 43 today.

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