Amber Rose and Wiz Khalifa now have a newborn son to look after. Rose, 29, gave birth to Sebastian Taylor Thomaz on Thursday, The New York Daily News reported.

Like a proud father, Khalifa, 25, tweeted the birth announcement: "Happy Birthday Sebastian 'The Bash' Taylor Thomaz!"

Even during the pregnancy, the celebrity couple was very active on Twitter, posting photos of Rose's blossoming belly, and of their pre-parenthood intimate moments, according to The Daily News.

"Today was the first day of my home birthing classes," the first-time mom tweeted in January. "No meds, no hospital, just the privacy of my own home. I'm so excited for this experience!"

The "Young, Wild & Free" rapper had previously expressed that he's ready to take on supportive father duties.

"We're gonna have a midwife and a doula at the crib and she's gonna be in a pool and it's gonna be like a relaxing environment," Khalifa told radio personality Big Boy, The Daily News reported.

In fact, he added that he would be so hands-on that "when she's ready she's gonna tell me to stick my hands down there and I'm gonna pull the baby out."

Both Khalifa and Rose were prepared in advance, not only about how Rose would deliver, but they had also come up with names and nicknames. The nickname "The Bash" was on Khalifa's mind for a while.

"It's funny because I came up with the name for our boy and immediately he came up with a rapper [nickname] for him," Rose told The Daily News.

Both parents were so excited about The Bash's birth that Khalifa tweeted, "everyone welcome this perfect young man into the world."

Khalifa said, according to Us Weekly, that he's focused on caring for his son and future wife.

"My wife said she just wants a Jack & coke, a cheesesteak, and a cigarette," he shared early Friday morning. "That's why I'm marrying that woman!"

Celebrity friends Rihanna and Snoop Dogg congratulated the couple on their new son.

"Congratulations to my fam Wiz and Amber! Welcome baby Bash! You're born in an exquisite month," Rihanna, who celebrated her 25th birthday on Wednesday, tweeted. "Baby Pisces."

"Welcome to fatherhood Wiz! Congrats to you and Amber on your new son -- he got the same Cday as Cordell Broadus!" Snoop Dogg (real name: Calvin Cordozar Broadus, Jr.), a father of three, tweeted.