Julianna Rose Mauriello (born May 26, 1991) is an American actress, who stars in Lazytown, and has appeared in various Broadway musicals.

Mauriello began her stage career in performances of The Nutcracker, at SUNY Purchase, Carousel, and The Wiz. Her Broadway debut was in Oklahoma!, from 2002-2003.[1] From there, she moved to roles in Gypsy: A Musical Fable, starring alongside Bernadette Peters,[2] and A Tree Grows in Brooklyn.[3]

She currently plays the character of Stephanie on LazyTown, filmed in Iceland. She was nominated for a 2006 Daytime Emmy Award for “Outstanding Performer in a Children’s Series”; Kevin Clash won the award.[4]

She is an Honor Student at Professional Performing Arts School.[2] Julianna has also done many commercials and voiceovers and is an avid dancer, taking classes in ballet, jazz, tap and Irish step. She has also been involved in gymnastics.[2]