The "Toxic" singer will front local TV spots in Las Vegas, where she has a residency at the Planet Hollywood resort, urging fans to be safe at Christmas, reported Contactmusic.
Her new public service announcement - aimed at protecting women from opportunists at holiday parties - will also appear at regular intervals throughout Caesars Entertainment Las Vegas properties and on digital billboards around the city.
"Arrive Together. Stick Together. Leave Together."
"Watching out for your friends and staying together throughout the night is a simple, easy way to party smart," the pop star says.