New Mama's -- Mother's Day

It's definitely all about the mama's out there this weekend, but these celebs are celebrating Mother's Day as first-timers with their little ones ... so they deserve a little mom shoutout!

Halsey, Naomi Campbell and Lauren Lane are just a few stars to name that have taken you through their new-mom journey over the past year ... from posting and sharing growing belly-bump pics to the first time they held their precious, new babies!

Emmy Rossum, Abby De La Rosa, and Lauren Sorrentino also joined "The New Mom's Club," as they welcomed their new additions into the world!

Scroll through our gallery to see all of the new-mom-cuteness overload!