Fallout Boy bassist Pete Wentz recently confirmed that his girlfriend, Meagan Camper, has already given birth to a healthy baby boy named Saint Lazslo.

The 35-year-old rocker and his 25-year-old model girlfriend welcomed Saint Lazslo on Wednesday, August 20, according to People Magazine.

Wentz's representative released a statement on behalf of the bassist and said, "Mom and baby are happy and healthy. They are thrilled at the addition to the family and Bronx is over the moon to be a big brother."

Prior to the baby boy's birth, Wentz posted a photo of his very pregnant girlfriend which made people assume she would give birth anytime soon, E! News reported.

Back in May, Wentz revealed that he and his girlfriend had no plans of finding out the baby's sex prior to giving birth.

At that time, he said, "We're waiting. I think we'll probably do a surprise on this one."

Saint Lazslo is Wentz's second son. He also shares five year old Bronx with ex-wife Ashlee Simpson, US Weekly reported.

Also in May, Wentz and Camper celebrated a baby shower for Saint Lazslo and at that time opened up on their desire to start a family together.

A source close to the couple told People Magazine, "They've been planning this for a while."

Wentz has also been very vocal about wanting to have more children. "What's more exciting that having the pitter-patter of another little gremlin running around? Now it will be two-on-two," he said.

Meanwhile, Wentz also recently joined in the ALS ice bucket challenge bandwagon after he was nominated by his friends.

The bassist simply posted a photo of her very chill challenge and wrote, "Coming Soon," which obviously means he will upload the actual video of his ALS ice bucket challenge very soon.

So that's something his fans should really watch out for!