Kourtney Kardashian Hosts Adventure Beach Bash For Penelope's 12th Birthday

Kourtney Kardashian 's second-oldest child is officially 12-years-old!

The Kardashians star posted a video of the adventurous birthday bash to Instagram on Sunday (July 14) that shows daughter Penelope living her best life with friends at the beach on her birthday.

The video in question, accompanied by the caption "12 years young," features fun in the sun, swimming in the ocean, skipping along the board walk, and riding a ferris wheel. And what would another trip around the sun be without a birthday cake? The initial scene in the clip depicts a small cake with the words "Happy Birthday Penelope," in colors matching blankets and umbrellas laid out at the beach for each of the child's friends to lounge on.

Penelope is the Lemme founder's second child with ex Scott Disick . The former pair also co-parent Mason , 14, and Reign , 9. Just last year, Kardashian gave birth to her fourth child, Rocky Thirteen Barker , whom she shares with current husband and blink-182 drummer Travis Barker .

Barker took to the comment section of the birthday post to wish step-daughter Penelope a happy 12th birthday amid similar fan comments. Kardashian also shared the video to her story, commenting on how she could not believe that her only daughter was already 12-years-old!

Happy belated birthday, Penelope!