Ireland Baldwin, Alec Baldwin and Kim Basinger's 17-year-old daughter, is now a big sister.

Baldwin and wife Hilaria announced the birth of their daughter, Carmen Gabriela, on Hilaria's Twitter account on Friday. Shortly following, Ireland took to her Tumblr blog to share her excitement about the news, penning a sweet and funny note to her new younger sister.

I sure wish I had an experimental, older, wild child of a sister. I would have been way better off. So here I am. Hopefully by the time you read and understand this, we’ll be best friends, sitting in some rad coffee shop in Brooklyn, talking about bands and how hot Channing Tatum used to be hot ... I love you, Carmen. You have been born into one crazy family. You are both lucky and cursed at the same time. We are going to have so much fun together.

The teen also shared her best life advice for the newborn.

BE CAREFUL WHO YOU TRUST. You have parents who are in the public eye. A lot of people are going to want to be your friend because of it. Don’t buy everyone dinner or tickets to the One Direction reunion concert because you feel obligated to do it. Make sure your friends love you for who YOU are, Carmen.

Click here to read the full post on her blog, titled "Happy Birthday."

Ireland also tweeted on Friday:

I was born October 23. Carmen was born Friday, August 23. ❤

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