Aerosmith classic rocker Steven Tyler has become a grandfather again, considering that Liv Tyler's mom news sees the family in the happiest of scenarios, as the beautiful "Lord of the Rings" actress has just welcomed a baby boy with boyfriend David Gardner, her second after 10 year-old son Milo!

It's a happy day in the Tyler family, after Liv Tyler's mom role welcomes another little child, to accompany a much bigger older brother - it's the couple's first child together, though Tyler has a son named Milo William from her marriage to British musician Royston Langdon.

According to The Daily Mail, the happy Liv Tyler mom news came this Friday, after the actress' reps told the world that Tyler had given birth before she was due, after having announced her pregnancy over the past September, as her HBO show "The Leftovers" finished its very first season at the beginning of the same month.

Her representatives spoke exclusively about Liv Tyler's mom news to People Magazine, telling them that the beautiful actress, most famous for her role as Arwen in the "Lord of the Rings" trilogy and as Betty in the 2008 Edward Norton movie "The Incredible Hulk," had just given birth to a healthy little boy, who will be joining big brothers Milo and Gray, boyfriend's David Gardner's 7 year-old son from a previous relationship.

It's certainly a big and happy family - perhaps the world can wait for a sweet Aerosmith ballad about becoming a grandfather again from rocker granddaddy Steven Tyler!

Although the baby boy is healthy, they'll both be staying in the hospital for a couple more days, due to the fact that his birth came six weeks early.

Rumor Fix reports that Liv's father Steven and her sister Mia were present for the birth, and surely they filled the new Liv Tyler mom status with a lot of family love!