New York (ANI): Singer Rihanna was seen giving her muscles a workout as she tried to help some friends with their luggage in a hotel lobby. The R and B singer had made a stop at the Bryant Park Hotel before heading to her native Barbados for the holidays.

"She was with four pals and was helping them all move their bags," the New York Post quoted a source as saying. "They wouldn't let her, so she kept jokingly trying to grab the bags out of their hands. "It kind of looked like they were playing a friendly game of tug of war," the source added.