Celebrity siblings that most people don't know exist

[post_page_title]Trey Smith (Willow and Jaden Smith)[/post_page_title]
Willow and Jaden Smith have such a strong presence on social media, it almost feels like there’s nothing we don’t know about them. It might come as a surprise, then, that there’s actually a third Smith sibling – Trey, who’s the oldest of the three, and a product of Will’s marriage to Sheree Zampino.

But if you think about it, you probably have seen Trey before – you just didn’t remember, because he was so little. He was featured on his dad’s 1998 music video for the song Just the Two of Us!