Ariel Winter Writes Sweet Message to Sister Shanelle For #NationalSiblingsDay

Ariel Winter has nothing but amazing things to say about her older sister Shanelle.

The 19-year-old Modern Family star took to Instagram for #NationalSiblingsDay and posted a cute photo of them together.

“Happy Siblings Day to this beautiful human that I’m lucky enough to call my sister,” Ariel wrote. “You are my best friend and my rock. I’d be absolutely lost in this world without you. Thank you for being the most incredible sister. Love you more than anything!”

A couple years ago, Shanelle was given custody of Ariel when she got emancipated from her mother over claims of abuse.

Pictured: Ariel bares some midriff while sipping on a cold drink and heading to Nine Zero One salon on Monday afternoon (April 10) in Beverly Hills, Calif.