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Get ready, there's a new Kardashian to keep up with.

Kourtney Kardashian gave birth Sunday to a daughter, Penelope Scotland Disick, E! News reports.

"Scott and I are overjoyed to welcome our precious angel Penelope Scotland Disick into our lives. We are forever blessed. Mommy and baby are resting comfortably," Kourtney, 33, told E! News.

Kardashian had an all-natural birth, with Penelope Scotland weighing in at 7 pounds, 14 ounces. This is the second child for Kardashian and boyfriend Scott Disick. Their son, Mason, turned two in December.

"It was a great. She had an easy delivery," mother Kris Jenner told E! News. "[Penelope] is so cute. She looks just like Mason. She's so beautiful. We are so happy."

"Welcome to the world, Penelope Scotland Disick!" Kim Kardashian posted on her website. "Kourtney gave birth to a beautiful baby daughter on Sunday and the whole family is so thrilled to finally meet her! She is absolutely perfect! I am so excited to be an aunt again and can't wait to spoil little Penelope. I know Mason is going to be the best big brother in the whole world. Congratulations Kourtney and Scott. Xo."

"Such an amazing day!!!!!" sister Khloe Kardashian tweeted Sunday.