Guns N Roses icon Slash is grieving the loss of his stepdaughter Lucy-Bleu Knight who died at the young age of 25. The music star announced the news just a matter of hours after cancelling four tour dates of his solo tour, SERPENT, as he takes time to mourn. The 58-year-old shared the heartbreaking update on his Instagram in the early hours this morning, Monday, July 22. In the tribute, Slash said she was a ‘sweet soul’ as he asked for privacy for the family at this time. The celebrity has seen an outpouring of condolences and support from fans since announcing the news. She joins the list of …