My 28 y/o sister because she's the coolest person I know. She had always been ever-supportive with my plans and the one person I can ask for money when i'm broke knowing that she'll never collect what i've borrowed from her. She's also very generous and most of my clothes were bought by her. She also doesn't nag me even if i go online for 12 hrs straight but brings me snacks cause she knows im a lazy bum and would rather skip lunch than to go out and buy food.