Catherine Ashmore Bradley is an American actress. She made her Broadway debut as a child performer in Harry Potter and the Cursed Child and voiced Deema in the Nick Jr. animated series Bubble Guppies. She is best known for playing Luan Loud in the Nickelodeon live-action comedy series The Really Loud House (2022–2024) and in its two related television films, A Loud House Christmas (2021) and A Really Haunted Loud House (2023), opposite her younger sister Aubin Bradley, who plays Lucy Loud. (Via Wikipedia)