The 'Beauty and a Beat' hitmaker has led the way with tributes to the star earlier today (10.08.14) as she celebrates turning 17, and despite only being three years older he said it has been ''dope'' seeing her grow up.
He wrote on Instagram: ''Happy birthday @kyliejenner ;) glad I got to spend it with u. So dope watching u grow up (sic)''
Kylie's mother Kris Jenner also wished her daughter well on her special day, praising her for her ''amazing energy'' and ''endless imagination''.
She wrote: ''Happy Birthday to my precious baby girl @kyliejenner !!!
''You are such a bright light in our family and always bring love, laughter, your amazing energy and your endless imagination to every day!!
''Your huge heart and delicious hugs make me even more proud of you. I love you so very much and thank God every day for blessing me with you!''
Her older sister Kendall, 18, was only one of many to offer her well-wishes.
She said: ''Happy birthday to my teeny tiny baby sister @kyliejenner I love you!''
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