Maddie Ziegler Writes the Cutest Birthday Message For Sister MacKenzie

Maddie Zeigler is really close with her younger sister MacKenzie.

The 14-year-old dancer and actress took to Instagram to share a super sweet birthday message for her sis.

“HAPPY BIRTHDAY to my best friend in the entire world !! you are the most beautiful person kenz!!” she wrote. “i love how everyday we become better friends. you’re the person i go to if i need to vent about my life and i love that you do the same to me.”

“you’re becoming the most beautiful girl with an even more beautiful heart !!” Maddie continued. “the best lil sister ever. best friends for life. i love you so much kenz! HAVE THE BEST BIRTHDAY.”

(Kenzie turned 13 on June 4.)

Pictured: Maddie joins her Book of Henry co-stars Jacob Tremblay and Jaeden Lieberher at the Young Hollywood studios on Monday (June 5) in Los Angeles.