Kaia Gerber praised her brother Presley Gerber’s transparency about his addiction battle and mental health struggles one month before his death. While chatting with Vogue for her September cover story, published last month, the model labeled her sibling the “greatest teacher” for showing her “there’s only so much you can hide from the world.” Presley, notably, opened up in 2024 about his dependency on prescription medication and revealed he had suffered a near-fatal fentanyl overdose that left him in a coma. He subsequently made headlines for announcing his sobriety from alcohol, naming the depressants he was taking for panic attacks and…