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

'Happy Birthday my sweetest Benjamin, it feels like yesterday you were this young and now you’re 13!!' she wrote in the caption, in a reference to the picture she posted. 'I love you!.' ...

David accompanied the post with an adoring caption: "Happy 13th Birthday to my beautiful little girl. Daddy is so proud of you, you have grown up to be a kind, generous & a beautiful young lady ...