It's a Boy for Jackson Rathbone, Girlfriend!

Jackson Rathbone and Sheila Hafsadi are first-time parents.

The Twilight Saga star and his girlfriend welcomed a baby boy named Monroe Jackson Rathbone VI into the world yesterday, the actor's rep tells Us Weekly. He weighed in at eight pounds, 11 ounces and was born at 9:43 a.m.

Rathbone, who is also a musician and plays with a band called 100 Monkeys, met Hafsadi (a dancer) during a tour stop and the couple announced it was expecting in February.

He's portrayed Jasper Hale in every installment of this wildly anticipated franchise and will help close it out this November with a role in Breaking Dawn Part 2.