A real-life “Sister Act” is on its way to Bones. Zooey Deschanel will join sister Emily Deschanel for a holiday-themed episode of the hit FOX series later this year, The Futon Critic reports.

In this first-ever on-screen pairing of the Deschanel sisters, Zooey plays Margaret Whitesell, a distant relative of Dr. Temperance Brennan (Emily). When Brennan ’s father, Max Keenan (guest star Ryan O’Neal), makes contact with Margaret, he invites her to spend Christmas with him and his daughter.

“The Goop on the Girl” episode airs Thursday, Dec. 10 @ 8PM on FOX.