Kylie Jenner and Travis Scott are introducing their baby to the world.

The beauty mogul took to Instagram Stories on Friday (Feb. 11) to announce the name of their newborn son: Wolf Webster.

The couple’s second child was born on Feb. 2, but Kylie waited four days before announcing his arrival on social media. She shared a black-and-white photo of their daughter Stormi holding her newborn brother’s arm and captioned it with a blue heart emoji and Wolf’s 2-2-22 birth date.

Travis reacted with a series of brown and blue heart emojis, while friends and family members including Kris Jenner, Kim Kardashian, Khloe Kardashian, Hailey Bieber, and Normani shared their love in the comments.

Wolf’s birthday falls just one day after his big sister, who recently turned four. Sources close to Kylie tell TMZ that she and the baby are doing great.

In September, Kylie confirmed that she was pregnant and expecting the couple’s second child.