Invision/AP 1 / 10

It's a boy!

Jackson Rathbone and his girlfriend, Sheila Hafsadi, welcomed their first child together on Thursday -- a baby boy named Monroe Jackson Rathbone VI, his rep confirms to Us Weekly.

Baby Monroe was born at 9:43 a.m. and weighed 8 pounds, 11 ounces at birth.

PHOTOS: Hollywood's new dads

The "Twilight" actor's rep told Us exclusively in February that the couple was "thrilled and excited to be expecting their first child."

Rathbone, 27, met burlesque dancer Hafsadi during a tour stop with his band, 100 Monkeys.

PHOTOS: 'Twilight' stars now and then

"One of the greatest things I could expect to be in life is a father," the actor-musician told Us at the Hollywood premiere of "Gone" back in February. "I'm very excited!"

Rathbone was relying on his own father for parenting advice. "I have one of the greatest dads in the world," he gushed. "He's just been giving me amazing advice."

PHOTOS: Vampires through the years

The best piece of advice he received? "Be prepared for lots of poop!"

This article originally appeared on Twilight's Jackson Rathbone Welcomes Son, Monroe Jackson Rathbone VI


Matthew McConaughey, Wife Camila Expecting Baby No. 3

See Jack Osbourne, Baby Pearl Go for a Swim

Megan Fox Debuts Baby Belly in Teeny Bikini