Cameron Boyce's younger sister has broken her silence nearly one week after his unexpected death.

17-year-old Maya Boyce paid tribute to her late brother and best friend on Instagram, describing the last "happy" moments she shared with him before his roommate found him dead in his sleep on Saturday, July 6, after suffering from a seizure triggered by "an ongoing medical condition" which was later confirmed to be epilepsy.

“Yes, he died. Yes, I’m sad,” she started her heartwrenching post, which featured a series of images of the Disney star throughout his life. “Cameron was my best friend. He is someone I will always idolize. His smile could light up a room, unlike anyone else’s. He was perfect.”

“He always said that if you have a voice, you have the privilege of using that voice for change, and he did not take that idea lightly. He understood his responsibility as someone who many kids would look up to," she continued.

“Cameron always went out of his way to be giving and kind. He did more with his 20 years of life, than most people ever could with 100 years. He was actively charitable. He traveled the world. He made creativity and art his life’s mission, and he encouraged others to do the same," Maya wrote.

“Of course, I am devastated. I will be for the rest of my life. But what I’m holding onto, and what I encourage you to hold onto as well, is the memory of his endless optimism," she added.

“He was sunlight wearing shoes. I can confidently say, he wants us to celebrate, grow and persevere. Yes, he died. Yes, I’m sad. I’m also happy, and grateful. I was with him hours before he died. It was normal and fun. We said ‘I love you’. He was happy," Maya explained, before concluding, “I spent 17 years knowing what it was like to be loved by Cameron Boyce. That is the most beautiful gift I have ever received.”

Read Maya Boyce's full Instagram tribute, below:

Earlier this week, Cameron's father Victor also shared one of the last photos ever taken of his son hours before "he was snatched" from [their] lives" at just 20 years old.

It was just announced Disney Channel has decided to cancel its Descendants 3 red carpet premiere in the wake of the beloved actor's death. In a statement, the company said they will donate money to the Thirst Project, a nonprofit organization Cameron was involved in that provides communities with safe drinking water.

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