Corey Simms now has three special little girls in his life.

The "Teen Mom 2" dad -- who is already a proud papa to five-year-old twins Ali and Aleeah with his ex Leah Messer -- just welcomed a healthy daughter with his wife Miranda. Remington "Remi" Monroe Simms was born at 12:32 p.m. on Sunday (November 8) and tipped the scales at 4 pounds, 11 ounces. While the newborn -- looking super stylish in an appropriate pink hat, below -- made her grand entrance a bit early (at the 32-week mark), the tiny tot is thriving and is doing absolutely fantastic.

"We are so happy and excited," Corey told MTV News exclusively about the brand-new addition. "Miranda and the baby are both healthy and happy, and we can't wait for Ali & Aleeah to meet their little sister." And we're sure the precious twins will absolutely dote on their younger sib -- and teach her all about "Frozen," the wonders of dressing up in costume and much more.

Check out more sweet snapshots of Baby R below -- and be sure to offer your congratulatory messages to the family in the comments!