Gwen Stefani may have just enjoyed a fun Christmas with boyfriend Blake Shelton and her family, but the hardworking singer is already back to the grind, wrapping up 2018 with a few more shows in Las Vegas as part of her residency at Planet Hollywood.

Stefani returned to Sin City the day after Christmas and seemed happy to get back to work, especially since she couldn't resist sitting down at a very special slot machine and trying her luck before her show.

Yes, that's exactly what it looks like. In case you didn't know, a Blake Shelton slot machine does exist and is in full operation at the Planet Hollywood casino. Naturally, Stefani's appearance in the casino drew a number of spectators (which she documented herself on her Instagram stories) as she laughingly tested the slots out.

The singer graciously posed for photos and chatted with fans as they enjoyed capturing the funny moment on their own phones. "I really got a crowd here," Stefani quipped. "Check it out."

The couple have spent much of the holiday season together (even going so far as to pose in reindeer-themed pajamas) and recently released a new music video for Stefani's Christmas song "You Make It Feel Like Christmas" during which she pretends to be cheating on the country singer with Santa Claus.

After finishing up the year in Vegas, Stefani will resume her "Just a Girl" residency with a fresh set of dates starting in February. Meanwhile, Shelton wrapped up his most recent season of The Voice earlier this month and will take some time off before embarking on a 2019 tour.

Seriously, Gwen + Blake Are the Cutest! See Pics: