|Harper & Sydnee Udell as Arianna Horton|
|Days of our Lives|
|Portrayed by||Harper & Sydnee Udell|
|Current status||Present, Recurring|
|First appearance||May 22, 2013|
|Created by|| Gary Tomlin|
|Fullname||Arianna Grace Horton|
|Namesake(s)|| Arianna Hernandez |
|Born||May 21, 2013|
Arianna "Ari" Grace Horton is a fictional character from the NBC soap opera Days of Our Lives. She is the daughter of Will Horton and Gabi Hernandez. She was born on May 21, 2013 in an abandoned shed on Smith Island, delivered by Sonny Kiriakis. Arianna weighed 7 pounds and was 20 inches long.
She was named after her deceased aunts, Arianna Hernandez and Grace McCormick DiMera, the baby her maternal uncle raised. Grace's father Chad DiMera approved of this. Her godparents are Sonny Kiriakis and Abigail Deveraux.
She is being raised by her mother Gabi as a single mother after her father Will Horton was murdered and is still close to Sonny Kiriakis who is her step-father. Arianna is close with Chad DiMera and Abby Deveraux. In 2017, it's revealed that her father Will is alive and in Memphis.