Her sister Evelyn Penn celebrates her first birthday today — May 5th 2015 — and big sister Rumer Willis decided to mark the milestone by posting an Instagram shout out. She accompanied the post with a beautiful photo of the birthday girl with dad Bruce Willis and older sister Mabel Ray, 3, and wrote:
Happy birthday to my beautiful baby sister miss Evelyn Penn. I love you so much sweet girl.
Photo credit: Ruelarue Instagram