Charles Eshelman/FilmMagic/Getty Images

Drew Barrymore will be walking down the aisle with boyfriend Will Kopelman.

The actress and art consultant got engaged while on a 10-day vacation in Sun Valley, Idaho, during the holidays, a source told People magazine.

But it is unclear what day the engagement actually took place. "They are very happy together," the source told People.

Kopelman, 34,  reportedly proposed to Barrymore, 36, with a Graff  "colorless radiant-cut diamond," according to the magazine.

The couple has been seen together throughout the past year.

This will be Barrymore's third marriage. She was previously married to comedian Tom Green and bar owner Jeremy Thomas.