The former teen stars have welcomed their first child together. Their son, Noah Shannon Green, made his big arrival on September 27.
After keeping the news of his birth on the down low for two weeks, the "Transformers star made the big announcement on her Facebook page writing, "We have been very lucky to have had a peaceful few weeks at home, but I would like to release this myself before others do. I gave birth to our son Noah Shannon Green on September 27th. He is healthy, happy, and perfect.
"We are humbled to have the opportunity to call ourselves the parents of this beautiful soul," she added. "I am forever grateful to God for allowing me to know this kind of boundless, immaculate love. Thanks to those of you who wish to send your positive energy and well wishes."
Noah is the first child for Fox and the second for Green who has a 10-year-old son, Kassius, with actress Vanessa Marcil.
It has been a very busy year in the world of celebrity babies with a whole flock of former teen stars branching out into parenthood. Here are some of the grown up teen stars with baby news:
Melissa Joan Hart: The "Sabrina, the Teenage Witch" and "Melissa & Joey" star welcomed her third child, son Tucker, in September. Tucker arrived September 18 and weighed in at 8 pounds, 5 ounces. He is the third boy for Melissa and her husband Mark Wilkerson and joins big brothers Braydon and Mason.
Taylor Hanson: The "MMMBop" musician is all grown up with a flock of his own! The singer, 29, and his wife Natalie, 28, welcomed their fifth child - daughter Wilhelmina Jane Hanson - on October 2. She joins siblings Ezra, 9, Penelope, 7, River, 6, and Viggo, 3. Taylor is currently working on his sixth studio album with his famous brothers for release sometime next year.
Drew Barrymore: The teenage flower child is all grown up! The actress welcomed her first child with her new husband Will Kopelman on September 26. The "ET" and "Poison Ivy" star gushed about the arrival of her baby writing, "We are proud to announce the birth of our daughter, Olive Barrymore Kopelman, born Sept. 26th, healthy, happy and welcomed by the whole family."
Note:This was written by a Yahoo! contributor. Join the Yahoo! Contributor Network here to start publishing your own articles.