Today is World Smile Day, which is quite literally one of the happiest holidays of all time. In honor of the occasion, Invisalign is partnering up with Operation Smile, a charity organization that helps kids born with cleft lips and cleft palate and makes sure they get proper surgical care.
Several stars – like Bailee Madison, the guys of The Vamps, the girls of Cimorelli, and Brady Reiter are supporting the cause by sharing cute pics proudly showing off their real styles, and nominating others to do the same. For each of their pics on social media with the hashtag #RealSmile, Invisalign is donating $1 to the cause, so everyone has one more reason to smile!
Click through the gallery to see which stars are supporting the #RealSmile cause. Let us know how you'll be celebrating by commenting below!