Arnold Schwarzenegger & Maria Shriver's 4 Children Flash Similar Smiles in Family Photo

It was just teeth as Katherine Schwarzenegger Pratt and her sister and two of her brothers beamed for the camera in a sibling appreciation post on April 10, 2023. Her smile is a mirror image of Patrick Schwarzenegger's.

Katherine Schwarzenegger Pratt wrote, "I thank God every single day for these humans! I love them SO much and am so grateful for them always ♥ my forever best friends and siblings." Maria Shriver and Arnold Schwarzenegger, their parents, got a shoutout at the close of the tribute.

"The Gift of Forgiveness" author closed the comments of the sweet sibling update. Her half-brother, Joseph Baena, was not pictured.

Katherine Schwarzenegger Pratt Is Tight with Her Siblings

Maria and Arnold became first-time parents to Katherine Eunice Schwarzenegger on December 13, 1989. Her middle name is a nod to her maternal grandmother Eunice Kennedy, John F. Kennedy's sister.

While still a student at the University of Southern California, she published "Rock What You've Got," a self-help book about inner and outer beauty, her first of many New York Times best-selling volumes. She and her husband, Chris Pratt, has two children, Lyla and Eloise Pratt.

With only an 18-month age gap, Katherine is very close to her sister Christina Schwarzenegger, born July 23, 1991. Christina is a Georgetown University English grad and studied interior architecture at Parsons School of Design. She's worked at Goop and is a Special Olympics Founder's Council member.

The sisters FaceTime most mornings and communicate over text throughout the day. In February, Katherine quipped on "TODAY": that their close bond is "a problem." She wrote "Good Night, Sister," a children's book to illustrate the relationship sisters share.

Katherine said having a sibling so close in age means you have a "built-in playmate and, later in life, a built-in best friend." The eldest Schwarzenegger sibling is raising her daughters on the same model as her mother by not comparing the sisters.

Patrick, born September 18, 1993, joked about Katherine's new book not being 'Good Night, Brother' when he posted about it. The third child of Maria Shriver and Arnold Schwarzenegger is a model and actor in 2022's "The Staircase."

Katherine Schwarzenegger Pratt has "very vivid memories" of Christopher Sargent Shriver Schwarzenegger, born September 27, 1997, being brought home from the hospital as a newborn. For the eight-year-old Katherine, Christopher was a "doll come to life."

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