Jake Gyllenhaal had a stunning redhead on his arm Sunday night at the Golden Globes, and he has everyone buzzing as to who the mystery girl is.

Well, the mystery ends here. Gyllenhaal brought ex-girlfriend and former child star Jenny Lewis as his date to the big show, according to PEOPLE. He was up for Best Actor in a Comedy or Musical for his role in 'Love and Other Drugs,' but lost to Paul Giamatti in 'Barney's Version.'

Lewis, 35, has starred in 'Troop Beverly Hills,' 'The Wizard' and 'Foxfire' -- alongside Angelina Jolie -- but has recently spent time as the frontwoman of the indie rock band Rilo Kiley.