enjoyed an early 50th birthday celebration at a cowboy bar on Thursday. The Gravity
actress reached the milestone age on Saturday (07.26.14), but began her festivities early by heading to the Million Dollar Cowboy Bar in Jackson Hole, Wyoming with a group of female pals to listen to country group Southern Soul Allstars. A source said: ''There were probably six to ten women in the group. It appeared to be a ladies night. They just came in to listen to the band.'' Though the group - which included Chelsea Handler - didn't seem to be dancing, they all had a great time. The onlooker added to E! News: ''It was pretty low key. They all had one drink...and were
all dressed casually. ''Sandra looked radiant, beautiful and was very sweet. It looked like she was having a blast.''