The 28-year-old had been staying out of the spotlight since losing her 12-fight winning streak to Holly Holm last month, but it looked like the marine was able to turn her frown upside down -- at least for a night.
"Thank you Lance Cpl. Jarrod Haschert for taking me to the Marine Corps Ball, being such a gentleman, and putting a smile on my face again," Rousey captioned a photo posted to Instagram on Saturday.
Other guests also took to social media to share some snaps of Rousey inside the gala.
The 22-year-old marine made headlines when his video asking the athlete to the ball went viral. "You are my celebrity crush," he gushed in the invitation. "I love everything you do and I think you are a phenomenal person. Which is why it would be my honor to take you to the Marine Corps Ball on Dec. 11."
"I really hope this doesn't get in the way of your training for your next fight in January, but I hope you take this into consideration because if you do, you'll truly be making my dream come true," he added.
One week before the ball, Haschert took to Facebook saying he had not yet heard from Rousey, but he wasn't worried. "I'm sure she still has good intentions of coming and I am very excited," he wrote. "Thank you for all your help and support of getting her attention."
Rousey's fight with Holm was originally scheduled to take place Jan. 2 in Las Vegas, Nevada, before being moved to Nov. 14 in Melbourne, Australia, and the scheduling change allowed Rousey to pencil in Haschert for the sweet date. Now that's a true win!
ET caught up with Rousey in September, who said she had "high hopes" for the occasion, even though she never expressed them to Haschert.