Greta Kline
- Birth Date
- 3/21/1994
- Birth Place
- New York City, New York
- Known For
- Acting
Greta Simone Kline (born March 21, 1994), formerly known by the stage name Frankie Cosmos, is an American musician and singer-songwriter. She is the daughter of actors Kevin Kline and Phoebe Cates. Her former stage name "Frankie Cosmos" is now the name of her band.
