Kourtney Kardashian has given birth to a baby boy, her third child together with Scott Disick, reports E! News .
The little boy was born on Sunday, which is also his big brother Mason 's fifth birthday! They also have a daughter, Penelope, 2.
"The family is freaking out with joy," a source told E! News. "What an amazing coincidence."
Kim and Khloé Kardashian threw a swanky Breakfast at Tiffany's-themed baby shower for their big sis last month at the Montage hotel in Beverly Hills and Kourtney celebrated again a few days later an early-Sunday-morning trip to IHOP with her best pals. Dress code? PJs!