Peyton & Spencer List Bring Awareness to Batten Disease At Charlotte & Gwenyth Grey's Tea Party

Peyton List joins her twin brother Spencer at the Charlotte & Gwenyth Gray Foundation Tea Party on Saturday afternoon (June 20) in Brentwood, Calif.

The 17-year-old actors supported the foundation in their hopes to find a cure for Batten Disease.

PHOTOS: Check out the latest pics of Peyton List

“Let’s #curebatten! Make a donation today at http://bit.ly/cure4batten and give hope to children battling Batten disease,” Peyton wrote on Twitter after the event.

Batten disease is a rare, fatal autosomal recessive neurodegenerative disorder that begins in childhood.

FYI: Peyton is wearing a Minkpink romper and My Jewel Bar choker.