Kourtney Kardashian celebrated her eldest child, Penelope Disick's 13th birthday on July 8. And on Sunday, she shared a group of photos from the newly minted teenager's party.

Penelope Disick is a teenager! Kourtney Kardashian says her "heart is exploding" as she celebrates her daughter's 13th birthday.

Kourtney Kardashian Barker shared a glimpse into her daughter Penelope's 13th birthday celebrations on Instagram, with photos and clips showing the newly minted teen's balloons, two personalized ...

Kim Kardashian shared a heartbreaking birthday tribute to her late childhood friend Lindsay May months after she died of a "rare" cancer.

The "Kardashians" star took to Instagram Saturday to mourn the death of her late pal on what would've been her birthday.

Kourtney Kardashian shared a glimpse into her and Scott Disick’s daughter Penelope Disick’s 13th birthday celebrations in Italy.

Parents offered advice on how to avoid common birthday party pitfalls. Prioritizing quality over quantity, minimizing stress for parents & children.

Parents offered advice on how to avoid common birthday party pitfalls. Prioritizing quality over quantity, minimizing stress for parents & children.

Kourtney Kardashian shared a glimpse into her and Scott Disick’s daughter Penelope Disick’s 13th birthday celebrations in Italy.

Kourtney Kardashian and Scott Disick's "coolest" daughter, Penelope, rang in her 13th birthday with a luxurious celebration abroad.