Arianne Phillips is an American costume designer. Phillips was born and raised in northern California and began making fashion sketches as a child. She relocated to New York in the early 1980s where she began working as an assistant stylist. She was initially recognized for helping to style Lenny Kravitz for his debut album, Let Love Rule.

She has had a long career in the film industry but she is best known as Madonna`s stylist and has designed and styled her last five concert tours. She has also worked with Courtney Love, Lenny Kravitz, No doubt and Justin Timberlake. She has received two Oscar nominations for Walk the Line and W.E. She has also received a BAFTA nomination for A Single Man. She won the costume designer`s Guild award for her work on W.E. In 2014 she was nominated for a Tony Award in the category Best Costume Design in a Musical, for her work on the Broadway musical Hedwig and the Angry Inch, starring Neil Patrick Harris. Her recent project includes the film Once Upon a Time in Hollywood.