Matthew McConaughey and Camila Alves

Matthew McConaughey capped off his first Father's Day by announcing he'll be a father for the second time. The actor's girlfriend, Camila Alves, is pregnant with their second child, McConaughey wrote on his website.

"Happy Father's Day. It's my first, and the last 11 months with Levi and Camila have been the most rewarding adventure to date," McConaughey wrote. "We have more blessed news to celebrate this Father's Day that [will] make this time next year double the fun. Levi is going to be a big brother... Yeah, we pulled off the greatest miracle in the world one more time, Camila and I are expecting our second child, bringing more life into the world, making more to live for. The future looks bright as the family grows and we thank you for all the well wishes you send our way. Viva la evolucion, naturally, and in the mean times and all time, just keep livin, Matthew and Camila."

McConaughey and Alves, a Brazilian model, have been dating for two years. Their son, Levi, turns 1 on July 7.