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Andrew Keegan is in baby bliss.

The nostalgic actor and his girlfriend, Arista Ilona, have welcomed their first child together, a daughter, on March 15.

They named their daughter Aiya Rose. She weighed 8 pounds, 3 ounces when she was born, Us Weekly reports.

"My beloved partner and I are overjoyed to welcome a healthy baby girl into our world," he told the magazine. "Our hearts are full of love, and we are thrilled to embrace our role as her parents."

The "10 Things I Hate About You" star previously said he and his girlfriend had a "sacred intention ceremony" last November to reveal the baby's gender.

Andrew has made headlines over the last few years after starting his own religion in Venice Beach, Calif., and becoming a spiritual guru who wants to "activate high vibes."

He previously said he spent $150,000 to start up the "religion." What he and his followers believe is hard to pin down.

"Hi, I'm Andrew," he told the gathering of 50 people in the group's headquarters, not far from the Pacific Ocean, according to a report in New York Magazine. "We love you, Andrew!" the group chants back. After all the back-and-forth pleasantries, Andrew bowed his head and said, "Today, I'm here to activate high vibes." The circle nods approvingly and responds in unison: "And so it is."

There was a lot of "om-ing," the report said.

In 2015 he was busted for selling Kombucha -- fermented tea that has the tiniest amount of alcohol in it -- at Keegan's Full Circle spiritual community center.

In his announcement that he and Arista were having a baby, he said, "My beloved partner and I are excited to welcome a baby into our lives and our community. We look forward to embracing the sacred responsibility of parenthood as well as learning from this spirit."

He continued, "Our intention is to raise our child in a co-creative environment where truth and love are foremost. We welcome your thoughts and prayers for this incubating life."

Full Circle also released a statement: "The Full Circle Venice community is delighted to be expanding! We are excited to share in this experience with Andrew Keegan and his partner and look forward to co-creating a beautiful life for this new being."