Jessie J is taking 2012 seriously, sort of. Not only has she made several New Year's resolutions, but she's also all about having fun, which is evidenced by a recent Twitter pic she posted on Tuesday (Jan. 10).

"Me and my friends last night decided it would be funny to see how we looked with #marshmellowteeth hahaha," she wrote. The tweet was accompanied by a close-up photo of the pop star with marshmallows in her mouth to simulate teeth.

Despite the gag, the star looks beautiful in the pic. She has little makeup on and is showing off her fresh face, which is far different from her 'Domino' video look. We're not sure if wearing less makeup is on Jessie's resolution list, but we're all for it.

We do, however, know that the singer is striving for two personal goals this year. First, she wants to put on some extra pounds. “It’s important to know when you need to gain weight, or when you need to lose weight and be healthy," she said. Her other big resolution? “I want to make a difference in the world."

We believe in Jessie one hundred percent. But, while her goals are serious, it's good to know she can laugh at herself, too.