Kate Wetherhead is an American actress, writer and director known for her work on The Devil Wears Prada the Musical, Submissions Only, Legally Blonde, Ordinary Days, and the Jack and Louisa book series.
Wetherhead began her career in children's theatre, appearing off-Broadway in Sarah, Plain and Tall, Tatjana in Color, Summer of the Swans, and Cam Jansen, as well as touring with A Christmas Carol.
She made her Broadway debut in 2005 in The 25th Annual Putnam County Spelling Bee as the understudy for Olive Ostrovsky, Logainne Schwartzandgrubenierre, and Marcy Park.
From 2013 to 2016, Wetherhead and Keenan-Bolger co-wrote the three-part children's book series Jack & Louisa, published by Penguin Group.
The Devil Wears Prada opened in October 2024 at the Dominion Theatre with a score by Elton John, lyrics by Shaina Taub and Mark Sonnenblick, book by Kate Wetherhead, and direction and choreography by Tony Award winner Jerry Mitchell (Kinky Boots, Legally Blonde, Hairspray).