Kourtney Kardashian receives baby well-wishes from sisters Kim, Khloe and Kendall
Kim Kardashian writes, "Welcome to the world, Penelope Scotland Disick! 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."
Khloe Kardashian Odom tweets, "Such an amazing day!!!!!"
Kendall Jenner writes, "great day! #babytime #PenelopeScotland"
Penelope Disick joins big brother Mason, 2 1/2 years old.