Andi delivered her son weighing 8.14 pounds via Caesarian section.
Her official announcement came with their first family picture and a shout-out to the father of her unico hijo.
On Instagram, she wrote, "We did it again papa! This journey was more of a breeze with you by my side. Thank you for being my rock!
"Because of you my worries and fears go away. I love love being your partner and going through this wonderful life, raising our kids with you.
"Glad I get to do this with you for life!"
Likewise, Philmar thanked Andi profusely.
He said, "Thanks for bringing our boy to this world! I am very proud of you mahal ko. you are the strongest person i know."
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The actress' post overflowed with congratulatory messages from fellow celebrity moms Saab Magalona, Michelle Madrigal, Melai Cantiveros, and Sylvia Sanchez.
Andi's sister Max Eigenmann, cousin Ryan Eigenmann, and friends Jessy Mendiola, Katarina Rodriguez expressed their happiness for the couple.
Earlier today, January 18, in a quick interview, Andi's mom Jaclyn Jose described to PEP.ph (Philippine Entertainment Portal) her apo as "guwapo."
She was grateful that both Andi and the baby are "healthy."