According to the British magazine Grazia, the 36-year-old actor, proposed to the former star of the television series Friends.
Vaughn gave Aniston, 37, a $175 000 ring during a recent trip to Las Vegas.
A source stated, "They haven’t set an exact date yet, but are talking about early summer. Both Jen and Vince are clearing their schedules to have some time off to spend together on a proper honeymoon."
The couple met during the shooting of the movie The Break-Up last summer. This romantic comedy will be on the big screen this summer.
There is talk about the couple living far away from Hollywood, in order to have more private and peaceful life.