Meghan Trainor and Daryl Sabara are expanding their family … because they have a baby girl at home … and she was born via surrogate.

The singer and actor now have three children together … and their newborn is named Mikey Moon Trainor.

In a social media post announcing her daughter, Meghan says … “Our baby girl Mikey Moon Trainor has finally made it to the world thanks to our incredible, superwoman surrogate.”

Meghan posted a ton of photos of the baby at home and in the hospital … so click through the gallery to see her growing family.

Andy Serkis is dropping hints about the cast for a new movie in ‘The Lord of the Rings’ franchise … and it sounds like he went to bat to get the band back together.

We got the guy who plays Gollum in the ‘LOTR’ trilogy at LAX on Tuesday and asked about the new movie he’s directing and starring in, “The Lord of the Rings: The Hunt For Gollum.”

Andy’s reprising his role as Gollum and Ian McKellen is returning as Gandalf, with Elijah Wood expected back as Frodo Baggins … and while Andy didn’t want to give too much away as far as cast, he did go on the record saying he “loved” the OG cast, which also featured Viggo Mortensen and Orlando Bloom.

Jennifer Lopez was in a giving mood Tuesday … handing out some cold hard cash to a homeless man … and it’s all on video.

The “Jenny From The Block” singer was dressed to the nines and in full glam coming out of a business meeting in Los Angeles this afternoon when a homeless man approached her on her way to her waiting Cadillac Escalade, asking for help.

J Lo seemed to ignore the man at first, walking right by him … but he was thrilled to see her, and was overheard saying he was going to tell everyone he saw a celeb.