Carter's twin sister, Angel, shared a selection of photos from their childhood with her followers on Instagram. "To my twin… I loved you beyond measure," she captioned her post. "You will be missed dearly. My funny, sweet Aaron,I have so many memories of you and I, and I promise to cherish them. I know you're at peace now. I will carry you with me until the day I die and get to see you again. 💔"