Happy birthday, Prince Michael Jackson! Michael Jackson’s oldest son turns 18 years old today. The b-day boy took to Twitter last night to celebrate his milestone birthday with a heartfelt tribute to his late father and his famous family. Jackson wrote, “Before I turn 18 tomorrow I really want to thank a few ppl and first is obviously my dad he was and is an incredible human being not only did he give me the gift of live he gave me an incredible opportunity to make something of myself.” Jackson ended his sweet birthday message with a mention of his grandmother Katherine Jackson, writing, “Finally my grandmother/guardian she has been through so much and is such a strong woman to have to live so much she’s an inspiration to keep going no matter what and have always been there for us and I love them all.”