Khloe Kardashian: Mason Loves Being a Big Brother to Penelope Scotland!

TV personality Khloe Kardashian makes an appearance to promote her fragrance, 'Unbreakable Bond,' at Perfumania on June 7, 2012 in Orange, California.  Imeh Akpanudosen/Getty Images

Khloe Kardashian is a proud auntie!

Just a day after her older sister Kourtney Kardashian gave birth to baby No. 2 on Sunday, Khloe took to her blog to gush over the newest Kardashian family member. And besides being gorgeous (Aunt Kim already confirmed that detail), little Penelope seems to be in good hands with her older brother Mason, 2, around.

"I'm an auntie again!!!!!!!!!! As I'm sure you all know, my beautiful big sister gave birth yesterday to the most perfect baby girl you've EVER seen —- Penelope Scotland Disick!" the 28-year-old Keeping Up with the Kardashians star wrote. "The entire family is literally exploding with joy and have not stopped fawning over our new little girl. And Mason is already loving being a big brother! This is just such a special and happy time for my family. Thank you to Kourt and Scott for making such beautiful babies! LOL."

Sister Kim, 31, jumped on her blog before any of her other family members could. "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 wrote.

Added step-aunt, Kendall Jenner, via Twitter: "Great day! ?#babytime? ?#PenelopeScotland?."

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