The birthday celebrations started off on Thursday last week at the Million Dollar Cowboy Bar in Jackson Hole, Wyoming. Joining the stars were Sandra‘s younger sister Gesine and comedian Whitney Cummings.
“They said they kept it [quiet] because she sometimes likes to just act like a normal person,” a source told People about the celebration. “They came out and danced and took a bunch of pictures.”
Check out a bunch of photos posted to Instagram over the weekend!