Arjun, 29, is elated to receive the letter from the 'Mary Kom' star.
"That's why Priyanka Chopra is one of the coolest people around... A hand written note in the time of SMS and emails," Arjun posted on Twitter.
In the note, Priyanka wrote, "To Fubu aka Arjun. Happy Happy Ingliss Friday! Fanny looks amazing. Love. Priyanka Chopra."
In the film, which will hit theatres this Friday, Arjun is playing a Konkani mechanic Savio Da Gama. It also stars Deepika Padukone, Pankaj Kapur, Naseeruddin Shah and Dimple Kapadia in pivotal roles.