Hayden and Jansen were pretty close, despite being from a showbiz family – and by close, we mean they didn't hate each other (just kidding, they actually seemed to get along!). Their parents, Lesley Vogel and Alan Panettiere, were both actors, which makes you wonder if the acting gene is just inherited or something (is there an acting gene?). The family has been pretty private about Jansen's passing, but Hayden did share a heartfelt tribute to her brother on social media.
How did Jansen Panettiere die? Hayden Panettiere’s brother, 28, was
In the tribute, Hayden called Jansen her "partner in crime" and shared some adorable childhood photos of the two. It's clear that Jansen will be deeply missed by his loved ones, and fans are still trying to process the news. We mean, it's not every day you hear about a talented young artist passing away so suddenly – it's like, what even is the point of having a favorite TV show if the people in it can just disappear like that?